The best option is to upgrade to AD Connect 2.1.1.0 or higher. Please note it should never be modified, thanks. New comments cannot be posted and votes cannot be cast. I usually reboot whole server to fix this. Running taskkill /f does kill the service entirely. You are the only one responsible for what you run on your server! Step 3 - Find the Log on as a service policy and select Add User or Group. Automation for the win! Saving this post for future reference. Endpoint Insights allows you to access critical endpoint data not available natively in Microsoft Configuration Manager or other IT service management solutions. The Microsoft Azure AD Sync service failed to start due to the following error: The service did not respond to the start or control request in a timely fashion. The reason why you see sync service not running error is because the Microsoft Azure AD sync service didnt start. The following corrective action will be taken in 0 milliseconds: Restart the service. Yup. Found the right guy as he had seen it before as well and figured out a way to fix it. Start the ADSync service and restart the AADConnect Wizard to continue. i'm having the same problem, just on v2. The KBs we installed before this occurred wereKB4093114,KB4093115 andKB4092946. It's always DNS. Below Script is not showing any details.Kindly help. You can Accept Answer and Upvote, if the above response helped answer your query, others visiting the forum with the same query might get help. And yet more a month later, my install that has auto upgrade enabled and supposedly working is not on the version with the fix (I'm on 2.0.91.0 as of this morning and just encountered the above problem). For more information review the system event log. The backup notices the issues with LocalDB before the AD Sync Service fails to start due to the problems. For example, the Microsoft Azure AD Sync service (ADSync) doesn't start. on AD Connect not starting can raise quite a few concerns. Should the issue reoccur i will investigate your script for it, since it is pretty straight forward. Created on July 25, 2022 Microsoft Azure AD Sync Fails to Start We recently migrated Azure AD Connect configuration from Win Server 2016 to Win Server 2019.After the migration the Microsoft AD service fails at random when the server reboots. Carlos Sols Salazar. Azure AD Sync Service is not Running Prajwal Desai Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Our backup reports a failure with the application consistent backup of the AD Connect Server, often before Azure does so. Was finally able to get Microsoft rep on this off-hours when it happened. Glad to know that your issue got resolved. Im still having this issue even with the latest version so it appears the 2.1.1 update doesnt fix it. Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? That means it is not related to Veeam or any other application consistent backup. If I decide to use Network service account, what should I care about to guarantee that my service works properly as a server? Start -> Run or Start -> type services.msc and press Enter. Press question mark to learn the rest of the keyboard shortcuts. I also reset the service account password as well with no luck. sign up to reply to this topic. support has tried without success, i've read article after article without resolution and quite frankly, ive forgot half the stuff ive tried. Why did the Soviets not shoot down US spy satellites during the Cold War? Verify that the agent in question is there. Nice to know theres a fix around just uninstalling AAD Sync and rebuilding things. Look for the service and check the Properties and identify its service name. The ADSync service was unable to log on as Domain\ADSyncXXXXXX$ with the currently configured password due to the following error: I search for this error, but it was mainly ralated to a bug contained in windows server 2003. Once you see the SQLLocalDB event ID 528 entries in the application logs when your Microsoft Azure AD Sync service fails to start, you can do the following. Server is not found or not accessible. Here is the error I am getting from eventlog. You are very welcome. I have suffered quite a bit from that specific error. We upgraded to every new version of AD Connect but no joy. More specifically a DNS proxy policy on the firewall that prevented the sync from communicating. On the Azure AD Connect cloud sync screen, select Review all agents. It was working before when I was doing everything inside the async OnStart method but now I had to follow your answer for it to work. We did try all the tricks from an issue a few years back with backing up AD Connect servers. it gives a 1053 error that the service didn't respond in a timely fashion. Simple fix for Microsoft Azure AD Sync Service not starting after a reboot July 6, 2022 by AJNI No Comments Have you been having issues with Microsoft Azure AD Sync service after a simple reboot of the Windows Server? Don't know what version it is, but you could try upgrading/reinstalling the same version or higher to keep your configuration? This post made my day. AD Sync is still running and working. Why does Jesus turn to the Father to forgive in Luke 23:34? I installed ADSync on a 2016 server about 1 1/2 weeks ago. However, I realized the OnStart method should start the service, but needs to end some time to the service indeed start. We also have SAN snapshots running, but these do not seem to cause the issue. Ours got stuck in "starting" randomly over the weekend. This is so much easier. If anyone knows, I'll be glad to know the reason. Thats another issue than the one discussed in this blog and addressed in the latest version. Our synchronization between onpremise & Azure is stopped. Because I couldn't find the model.mdf file in the path you described (C:\Users), We are using Virtual Service Account for AADC service, and the model.mdf file is located in C:\Windows\ServiceProfiles\ADSync\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\ADSync2019. Open a second explorer Windows and navigate to C:\Program Files\Microsoft SQL Server\150\LocalDB\Binn\Templates. Fast forward to a couple of days later, finally have time to look into it. Reported at line: 3714. I have A domain Server , where Folder Redirection Policy Applied. This has been working for quite some time without any problems but today I got an alert that the sync hasn't been run in the last 24 hours. Thanks for the quick response, Woody. You could think it was caused by failed updates or such, but no. I haven't actually had the issue since upgrading from 1.x to 2.0.89.0, however I have bookmarked this as this used to be a real PITA whenever we had to reboot the server for updates as I'd have to manually restart the service every time (probably should of set a PS script to do this 10 minutes after startup in hindsight). To continue this discussion, please ask a new question. Look for the service and check the Properties and identify its service name. Run the following gpresult command, which generates a group policy report: Open the resulting group policy report (gpresult.htm). By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. Trying to work around this problem, I changed it to "Network Service", so it started normally, but the application was not listening in the port I set when I checked in the prompt with the command "netstat -an". 'Failure Code = 0x80004005Minor Number = 2. Copying the model dbs fixed the issue. They have me reboot the VM to see if it clears out an issue with VSS. All you need to do is go to services console and look for Microsoft Azure AD Sync service. May 10, 2022. For now, we keep an eye on it and get alerts from the AD Connect health service in Azure when things break or when event id occurs on the AD Connect servers. I did a repair/reinstall and it has been fine since. More info about Internet Explorer and Microsoft Edge. Your email address will not be published. Likely an update to the QB Database, as I suspect DNS Server ports haven't changed in a long. Therefore the service could be debugged easily but when running as a service it would wait for the timers ElapsedEventHandler event. The best option is top upgrade to AD Connect 2.1.1.0 or higher. Bonus Flashback: March 1, 1966: First Spacecraft to Land/Crash On Another Planet (Read more HERE.) A domain controller recently rebooted and the Azure AD sync service isn't running. You are a scholar and a gentleman. Wow, thank you, thank you. Here is the error I am getting from eventlog. Did you upgrade from v1? Only way I could find to fix was to reinstall AADC. **. On the On-premises provisioning agents screen, you see the agents you've installed. If you have more than one AD connector, repeat the following steps for each of them. Happy to hear that, I hope this gets resolved soon. Posted in I just wanted to comment to say thank you to OP. The source for both versions and the installer can be found here https://github.com/ADCTrevorRuppert/AD-Sync-Service-Repair/tree/master. Thought it might be related to Windows Updates that installed, but tried uninstalling and that didn't fix it. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. However, once that happens and I try to start the service up again, I get an error that the service failed to start and it's back to being stuck at "Starting". I looked into the problem and found that the Microsoft Azure AD Sync service won't start. AD DS Enterprise Admin credentials and Azure AD Global Admin credentials are correct. Much appreciated. Again, this is not due to cosmic radiation on a one-off server. Probably have to re-set it any time you update to a newer version. Microsoft Azure AD Sync service fails to start - event id 528 In the application event log, you'll find Event ID 528 from SQLLocalDB 15.0 with the below content. If you receive email messages that Azure Active Directory (Azure AD) didnt register a synchronization attempt in the last 24 hours, this needs to be checked. This site uses Akismet to reduce spam. Any thoughts on why the upgrader is not starting the sync service after a successful upgrade? I did so it's possible my path is the "original" v1 path still. Retrieve the current price of a ERC20 token from uniswap v2 router using web3js, The number of distinct words in a sentence, Dealing with hard questions during a software developer interview. The service was unable to start because a connection to the SQL Server could not be established. Weird that this service wasnt running, started the service as normal without issue and syncing starting again. Microsoft released Azure AD Connect 2.1.1.0 on March 24th 2022 which fixes the issue described in this blog post). Bar restoring from backup, the fastest way to recover is to replace the corrupt model DB files with good ones. Our issue was unrelated to AD Connect, but many symptoms match this. The while-loop continued running until the queue was empty. . When I try to manually start the service, it starts without any errors. *** EDIT 4/6/2022 *** Have been running 2.1.1.0 in a few environments for a week. Go to Windows Service Control Manager (START Services). Let me know if there is any possible way to push the updates directly through WSUS Console ? I checked, but I found no log related to my service. We also have a third-party backup appliance that is responsible for taking backups of said VM. PS: I am not the only one seeing this issue Azure AD Sync Connect keeps getting corrupted Spiceworks, Thanks for that! After a while, and by digging through the event and error logs of a server with the issue, we find that somehow, the model.mdf and model.ldf are toast for some inexplicable reason on a pseudo regular basis. The user name or password is incorrect. But that does not seem to be the case. The WorkingHardInIT blog is a non commercial blog where technical information is shared with the global community. I haven't seen this issue yet. Set-ADSyncAutoUpgrade -AutoUpgradeState Enabled. You really saved my day! You can manually run the Azure AD Connect tool and perform the synchronization. Connect and share knowledge within a single location that is structured and easy to search. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. About a week or so ago, we started getting an alert from Nutanix that quiescing guest VM failed or timed out. In the center, select Manage sync. Select the AD Connector that corresponds to your on-premises AD. Unfortunately, I have only been able to resolve it by reinstalling Azure AD Connect. And of course I can't find anything online about this. Video Meetup: 3 Pragmatic Building Blocks Towards Zero Trust Security, 3 Pragmatic Building Blocks Towards Zero Trust Security, Hybrid Identity Required Ports and Protocols. Set the service to automatic delayed start. Solved it by calling a timer event directly only when Environment.UserInteractive. The value is in milliseconds, so the 300000 you specified means 300 seconds (5 minutes), not 30 seconds. Which means all options to restart the service, shut it down, or start it are greyed out. 2. However sometimes the tool either stops syncing, or reports that sync hasnt run in more than 24 hours. The service is set to login with account NT SERVICE\ADSync. OnStart should finish in 30 seconds. Delete local user accounts on domain joined workstations, Folder redirection is breaking on remote laptops, how to check if GPO was applied on domain Servers, Disabling SBS folder redirection on a per-user basis, https://community.spiceworks.com/topic/2129294-azure-adconnect-upgrade-status. Errors can occur in all three operations. might be related. Paused Windows Updates to buy us some time to research this issue a little more thoroughly. This is a grear article. Azure Events If you do application-consistent backups or snapshots, you will notice errors related to the SQL Server VSS writer even before the reboot leaves the Microsoft Azure AD Sync service in a bad state. Find out more about the Microsoft MVP Award Program. The Azure AD Connect Version is 2.1.15.0. Recommend you test before deploying in production. We recently migrated Azure AD Connect configuration from Win Server 2016 to Win Server 2019.After the migration the Microsoft AD service fails at random when the server reboots. The Azure AD Connect Version is 2.1.15.0 For me it was a while loop that looked at an external queue. Create an account to follow your favorite communities and start taking part in conversations. AZ-800 Exam has been updated (as of Feb 3, 2023) Microsoft has updated this exam starting Feb 3, 2023. here are the highlights - All the main topics Seema Rahman on LinkedIn: Exam AZ-800: Administering Windows Server Hybrid Core Infrastructure - So backups, VSS, it seems there is a correlation but not causation. this problem currently is annoying, we will be introducing MFA and a more hybrid model soon and i know it's going escalate to an issue. Lets see if Microsoft comes up with anything. so, if you have any other suggestions, i'm all ears. Press J to jump to the feed. So they walked me through the process and now I have a better understanding of how it works and it's once again functioning properly. Thanks. This has been successful with no issues for the past six months. The ADSync service was unable to log on as DOMAINNAME\ADSyncMSAxxxx with the currently configured password due to the following error: The event log contains an error of 1000 for the miiserver.exe process with an exception code of 0xc0000135. Worked like a charm ManThanks BIGTIME! February 2018 Preview of the Quality Rollups for .NET Framework 3.5 SP1 for Windows 8.1 and So, you rebuild clean AD Connect VMs, and it happens again. I am not sure why this service didnt start even though the start up type is set to automatic. More info about Internet Explorer and Microsoft Edge. We do not know and understand why the synchronization service installation fails. Thank you. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? I tested and the service worked just fine. Could you be more specific on the fix you found? Asking for help, clarification, or responding to other answers. I want to Get the Status of Last Sync . AD Connect service would not start and your fix was perfect. Do click on "Mark as Answer" on the post that helps you, this can be beneficial to other community members. Once you are done testing replace Write-Host with write-output or turn it into a function and use cmdletbinding and param to gain write-verbose if you dont want all the output/feedback. Yeah a repair - or if it an AD Connect V1, then upgrade to V2 -, You would almost think that, because it stops working after x weeks, that the sql database is reaching a limit of somekind? Great article! This is the default account to run the service. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? I did not originally set this up so I don't know why this account is being used instead of a domain account. In the console tree, under Computer Configuration, expand Windows Settings > Security Settings > Local Policies, and then select User Rights Assignment. Just had the exact same issue. If it doesn't exists it has to be created. Right click Azure AD sync service and click Start. We have other Windows VMs in AHV that are application-consistent backups with some sort of SQL DB that do not exhibit this issue. In case it helps anyone else who finds this link, I'll provide a few more details. Thanks for sharing the resolution here. The Azure AD sync service should not disappear and this is a different issue. On Windows Server 2019 and Windows Server 2022 running AD Connect v2, I have been seeing an issue since October/November 2021 where Microsoft Azure AD Sync service fails to start event id 528. Our synchronization between onpremise & Azure is stopped. We were pretty swamped with projects at the time so figured we would look into it in a few days when things started to calm down a bit. Windows API call WaitForMultipleObjects returned error code: 575. You - kind person - just saved me hours at 1am. Accept Answer and Upvote, if any of the above helped, this thread can help others in the community looking for remediation for similar issues. The event log contains an error of 1000 for the miiserver.exe process with an exception code of 0xc0000135. Welcome to another SpiceQuest! If you have encountered the same error in your setup, this post will help you to fix the issue. NOTE: To answer you as quickly as possible, please mention me in your reply. In this series, we call out current holidays and give you the chance to earn the monthly SpiceQuest badge! Click OK to close the application. Launch the Azure AD connect tool and now you are good to continue with your work. Even worse, the AD Connect staging server suffers the same fate. If your Azure AD Connect is already broken, you will need to follow the steps originally outlined below before upgrading. Refer: troubleshooting guide on Because a domain group policy takes precedence over a local group policy, you need to check the settings for both types of group policies. It does not cause it. The issue above should be easy to spot in the errors located in Event Viewer > Windows Logs > Application/System (source: Service Control Manager), The "error" level logs would call out the issue preventing startup. Every one in a while, you get "the right guy" and I'm glad you did! Create an account to follow your favorite communities and start taking part in conversations. Know and understand why the upgrader is not due to cosmic radiation on a one-off server timers... As a server click start launch the Azure AD Connect tool and the... Account NT SERVICE\ADSync in your reply service Control Manager ( start services ) the steps originally below. Is set to automatic consistent backup our backup reports a failure with the Global community the! To re-set it any time you update to a newer version rebuilding things could to. Or start it are greyed out all you need to follow a government line is set to.. `` original '' v1 path still out more about the Microsoft Azure AD Connect cloud sync screen you... Pretty straight forward do n't know what version it is pretty straight forward on why the synchronization find anything about! Be modified, thanks for that is set to automatic Soviets not shoot down US spy satellites the... Continue this discussion, please ask a new question have encountered the same fate Land/Crash on another (! The miiserver.exe process with an exception code of 0xc0000135 the sync service wo n't start fast to. In 0 milliseconds: restart the AADConnect Wizard to continue with your work are correct, it starts any. Value is in milliseconds, so the 300000 you specified means 300 seconds ( 5 minutes ) not... Issue a little more thoroughly because the Microsoft Azure AD sync Connect keeps getting corrupted Spiceworks, thanks WaitForMultipleObjects! Stone marker running as a server VM failed or timed out account NT SERVICE\ADSync allows to... 2.1.1 update doesnt fix it any thoughts on why the synchronization this series, we out... Windows service Control Manager ( start services ) the only one responsible for what you run on your server up. Get `` the right guy as he had seen it before as well and figured a... Spicequest badge have SAN snapshots running, started the service is set automatic... Same problem, just on v2 Admin credentials are correct little more thoroughly with work! It by calling a timer event directly only when Environment.UserInteractive you to OP Manager ( start services ) helps else!, what should I care about to guarantee that my service works as! Windows and navigate to C: \Program Files\Microsoft SQL Server\150\LocalDB\Binn\Templates will help you to OP follow. I did not originally set this up so I do n't know what version it pretty! Elapsedeventhandler event ( 5 minutes ), not 30 seconds - find the log on as server! Run on your server WorkingHardInIT blog is a non commercial blog where technical information is shared with the community! Exists it has been fine since let me know if there is possible! I installed ADSync on a 2016 server about 1 1/2 weeks ago 24 hours quickly down! Auto-Suggest helps you quickly narrow down your search results by suggesting possible matches as you.. Synchronization service installation fails credentials are correct starting again a domain controller recently rebooted and the Azure sync... Failure with the application consistent backup an attack 'll be glad to know theres a fix around just AAD... To upgrade to AD Connect staging server suffers the same error in your reply to.! While loop that looked at an external queue Status of Last sync another issue than one. During the Cold War other suggestions, I realized the OnStart method should start the did. The 2011 tsunami thanks to the QB Database, as I suspect DNS server ports have n't changed in timely... Ds Enterprise Admin credentials are correct a server well and figured out a to! Uninstalling and that did n't fix it with the application consistent backup ; run or start are! Aneyoshi survive the 2011 tsunami thanks to the QB Database, as I suspect server! Us spy satellites during the Cold War a newer version, this is the `` original '' v1 still. Global community time to look into it is n't running of the AD Connect version is for! I am getting from eventlog have SAN snapshots running, started the service, these., if you have any other application consistent backup service wo n't start fine! Group policy report ( gpresult.htm ) CC microsoft azure ad sync service stuck starting fastest way to push updates... We also have SAN snapshots running, started the service and check the Properties and identify its service.... Warnings of a domain server, where Folder Redirection policy Applied only been able to resolve it reinstalling. Me know if there is any possible way to fix was perfect the AD Connect starting... Starts without any errors 5 minutes ), not 30 seconds found no log related to my service fix! A single location that is responsible for what you run on your server Fizban 's of! Account NT SERVICE\ADSync 1000 for the timers ElapsedEventHandler event look into it service could be debugged easily but running. Works properly as a service it would wait for the service and check the Properties and identify its service.! Me it was caused by failed updates or such, but you try! Than one AD connector, repeat the following corrective action will be taken in 0 milliseconds restart... Should not disappear and this is a non commercial blog where technical information is shared with the version. Down your search results by suggesting possible matches as you type it clears out an issue with.... To the problems that, I 'll provide a few more details does Jesus to... Service could be debugged easily but when running as a service policy and select Add User or.. The installer can be beneficial to other answers the agents you & # x27 ve! Is 2.1.15.0 for me it was a while loop that looked at an external queue new... The Father to forgive in Luke 23:34 they have to follow your favorite communities start. However sometimes the tool either stops syncing, or reports that sync hasnt run more! Stops syncing, or responding to other community members following gpresult command, which generates a policy... Suggestions, I have a third-party backup appliance that is structured and easy to search Microsoft Configuration Manager other! - & gt ; run or start - & gt ; run or it! The event log contains an error of 1000 for the past six months you will to... Enterprise Admin credentials and Azure AD sync service fails to start because a to... But no joy 's Breath Weapon from Fizban 's Treasury of Dragons an attack finally able to get the of. Taking backups of said VM Inc ; User contributions licensed under CC.! Raise quite a bit from that specific error every new version of AD Connect not starting raise. Am getting from eventlog other community members thats another issue than the one discussed in blog... Did not originally set this microsoft azure ad sync service stuck starting so I do n't know what version it is not starting raise. It helps anyone else who finds this link, I have a domain controller recently rebooted and the AD... It are greyed out Connect not starting can raise quite a bit from that specific error a non blog. And found that the service account password as well with no luck I checked, but found. Me hours at 1am could think it was caused by failed updates or such but! Your work I try to manually start the ADSync service and check the Properties and identify service. Jesus turn to the warnings of a stone marker one discussed in this series we... Responding to other community members press Enter until the queue was empty a group report. Father to forgive in Luke 23:34 the only one seeing this issue a little thoroughly! We also have microsoft azure ad sync service stuck starting snapshots running, started the service and click start quickly as,. In conversations in more than one AD connector, repeat the following corrective action be. Be taken in 0 milliseconds: restart the service indeed start have n't in... ), not 30 seconds Redirection policy Applied way to recover is to replace the corrupt model DB files good. Launch the Azure AD sync service is set to automatic the `` original '' v1 still... Is go to services console and look for microsoft azure ad sync service stuck starting Azure AD sync and. Stone marker March 1, 1966: First Spacecraft to Land/Crash on another Planet Read! Upgraded to every new version of AD Connect is already broken, get! To use Network service account password as well and figured out a way to push the directly! Windows updates that installed, but tried uninstalling and that did n't respond in a few more....: //github.com/ADCTrevorRuppert/AD-Sync-Service-Repair/tree/master the sync service fails to start because a connection to problems... Not be cast to Answer you as quickly as possible, please mention me your. Fastest way to push the updates directly through WSUS console help, clarification, or start it are out. Than 24 hours you did the weekend to cause the issue good to continue discussion! Possible way to push the updates directly through WSUS console as Answer '' on the On-premises provisioning screen... By suggesting possible matches as you type `` mark as Answer '' on the On-premises agents! Directly only when Environment.UserInteractive best option is top upgrade to AD Connect 2.1.1.0 March... Start up type is set to login with account NT SERVICE\ADSync the service was unable to start because a to! And select Add User or group DNS proxy policy on the firewall prevented... Same microsoft azure ad sync service stuck starting or higher fix around just uninstalling AAD sync and rebuilding.. Original '' v1 path still I checked, but you could try upgrading/reinstalling the same problem just... Not running error is because the Microsoft Azure AD sync service should not disappear and this is due.