Now we see it happen sometime three weeks to a month apart, sometimes only a few days apart. Thanks! Just installed Windows updates and rebooted and now ADSync service won't start. Was finally able to get Microsoft rep on this off-hours when it happened. In the application event log, youll find Event ID 528 from SQLLocalDB 15.0 with the below content. You can also try and force kill ADSync.exe via its PID, Depending on what user account the AD Sync Service runs under, you need to navigate to a different path. Run the following gpresult command, which generates a group policy report: Open the resulting group policy report (gpresult.htm). Someimes, when I try to restart the service, I have an error 1053: The service did not respond to the start or control request in a timely fashion. For more information see SQL Server Books Online. Share. after the upgrade and reboot I see errors in event viewer: The Microsoft Azure AD Sync service terminated unexpectedly. NOTE: To answer you as quickly as possible, please mention me in your reply. I've looked up this code but I'm not getting anywhere with what I've found. ", Are you using a dedicated service account? I work for an MSP with about 500 clients of which maybe a third of them are using directory synchronization. If solutions 1 and 2 don't resolve the issue, remove and then reinstall directory synchronization. Again, this is not due to cosmic radiation on a one-off server. Windows API call WaitForMultipleObjects returned error code: 575. The backup notices the issues with LocalDB before the AD Sync Service fails to start due to the problems. it gives a 1053 error that the service didn't respond in a timely fashion. Here is how it was the code: But I still don't understand why the service ran (passed the "starting" status, but didn't work) when I used network service account. Why did the Soviets not shoot down US spy satellites during the Cold War? Check the Windows Application event log, it could contain some entries from your service's auto generated event source (which should have the same name of the service). The Azure AD Connect Version is 2.1.15.0 THANK YOU! Also the azure ad connect was running a version prior to 2.1.1.0 and i have upgraded aadc right away to the latest (in the hope that the ms fix will not cause the issue again). 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". The best option is to upgrade to AD Connect 2.1.1.0 or higher. But that does not seem to be the case. The new Intune Suite can simplify our customers' endpoint management experience, improve their security posture, and keep people at the center with exceptional user experiences. I search for this error, but it was mainly ralated to a bug contained in windows server 2003. Enter your email address to subscribe to this blog and receive notifications of new posts by email. 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. Step 1 - Open Group Policy on your domain controller. Under Actions, select Properties. Select the AD Connector that corresponds to your on-premises AD. services-sync-not-start, Also ensure TLS 1.2 is enabled on the server where Azure AD Connect is installed.Run below poweshell command to enable TLS 1.2, Thank you for asking this question on the **Microsoft Q&A Platform. I did a similar thing with a purposeful infinite loop that doesn't return. every time we reboot the server that has AD connect, we have to add the password for the ADDXXXXX account in order for it to start running again, this happens at every reboot every month. Remember your path might differ. AD Connect hangs synchronizing local AD to Azure AD We are using latest Azure AD Connect tool (1.1.371.0) on WS2012R2 server (2CPU, 2GB RAM, Hyper-V virtual machine). If I try and start the Microsoft Azure AD Sync service I get: Windows could not start the Microsoft Azure AD Sync service on Local Computer. It manifests clearly by the Microsoft Azure AD Sync service failing to start after a reboot. Do click on "Mark as Answer" on the post that helps you, this can be beneficial to other community members. The 'Microsoft Azure AD Sync' service is just stuck on starting. Open a second explorer Windows and navigate to C:\Program Files\Microsoft SQL Server\150\LocalDB\Binn\Templates. Unfortunately, I have only been able to resolve it by reinstalling Azure AD Connect. Go to the Connectors tab. . I've seen the popular solution about replacing the model.db and associated files - doesn't work. Copying the model dbs fixed the issue. First thing to try is a reboot. In a few months synchronization has hanged 3-4 times. All since the upgrade to v2, continuing through version 2.0.89. I looked into the problem and found that the Microsoft Azure AD Sync service won't start. Press J to jump to the feed. Thanks for the tip. February 22, 2018KB4075212 (Preview of Monthly Rollup) - Applies to: Windows 8.1 Enterprise, "This is a new issue identified with the SQL version and we will work to get this resolved in future releases of the agent, but at the moment the best course of action is to guarantee that AADC is stopped before restarting the machines." This thread is archived New comments cannot be posted and votes cannot be cast 179 49 comments skz- 1 yr. ago Right click Azure AD sync service and click Start. Step 3 - Find the Log on as a service policy and select Add User or Group. Youll find entries like The log scan number (37:218:29) passed to log scan in database model is not valid. Youve helped save a ton of hours here! Just installed Windows updates and rebooted and now ADSync service won't start. Unfortunatly, the Azure ADSync service keeps disappearing in my case and I have to keep re-installing it every now and then. Additional Details The following error information was returned by the provider: OriginalError=0x80004005 OLEDB Provider error (s): If anyone knows, I'll be glad to know the reason. Any suggestion would be greatly appreciated. Could you be more specific on the fix you found? Start the Synchronization Service Manager (START Synchronization Service). Completely at random - sometimes reboots are fine, sometimes not. Already long story short, decided to restore a VM from a few weeks ago that preceded these Nutanix alerts to get us back to a working state. A reddit dedicated to the profession of Computer System Administration. We have a DNS proxy policy on our firewall that filters dns requests. I ended up kicking it off with, if it was a http server, it is probably waiting for a connection, and never returning, that's why the Listener() never returns and the service is always in "Starting" mode; doing the thread is the right solution, It's strange! I'll try to dig a little deeper into these logs. Posted in Select Start, enter gpedit.msc in the search box, and then press Enter to open the Local Group Policy Editor snap-in. When I try it errors out it gives a 1053 error that the service didn't respond in a timely fashion. Therefore the service could be debugged easily but when running as a service it would wait for the timers ElapsedEventHandler event. Only way I could find to fix was to reinstall AADC. If all goes well, the Microsoft Azure AD Sync service is running, and you can synchronize to your hearts content. More specifically a DNS proxy policy on the firewall that prevented the sync from communicating. Click OK to close the application.Reported at line: 3714. Directory synchronization to Azure Active Directory stops, How to Install VMware Tools on Windows Server Core VM, Azure VM: Remote Computer Requires Network Level Authentication, Patch Server Core Installation with latest Windows Updates. Because a domain group policy takes precedence over a local group policy, you need to check the settings for both types of group policies. Did the upgrade to the latest version, but AD Sync still doesnt start (not after reboot). Do click on "Mark as Answer" on the post that helps you, this can be beneficial to other community members. We are having the same problem, but on a 2012 Server. The runtime script can still be easily automated with a scheduled task monitoring the service. The source for both versions and the installer can be found here https://github.com/ADCTrevorRuppert/AD-Sync-Service-Repair/tree/master. Press question mark to learn the rest of the keyboard shortcuts. We also have SAN snapshots running, but these do not seem to cause the issue. February 22, 2018KB4075212 (Preview of Monthly Rollup) - Applies to: Windows 8.1 Enterprise, ----------------------------------------------------------------------------. Thanks. If it mentions port bind issues at all, take a gander through the used ports and double check nothing is in conflict with the service starting:Hybrid Identity Required Ports and Protocols Opens a new window. Thanks for contributing an answer to Stack Overflow! I want to Get the Status of Last Sync . 4074807), 2. Verify that the ADSync service account is added for the following policy settings: For domain group policies, open an administrative command prompt. If you start the Azure Active Directory sync service, the Azure AD connect tool works fine. ..PowerShell Script, Get-ADUser -Filter *| Select-Object UserPrincipalName, LastDirSyncTime, ValidationStatus, DirSyncProvisioningErrors. Fix Azure AD Sync Service not Running-----Subscribe for more tutorials like . The service is set to login with account NT SERVICE\ADSync. To ensure that the service is configured properly, use the Services snap-in in Microsoft Management Console (MMC). The value is in milliseconds, so the 300000 you specified means 300 seconds (5 minutes), not 30 seconds. Well, not only did the restart not fix it, but that seemed to be the trigger to also break AD Connect. I've seen the popular solution about replacing the model.db and associated files - doesn't work. Found the right guy as he had seen it before as well and figured out a way to fix it. If you have a service that is not responding or showing pending in Windows services that you are unable to stop, use the following directions to force the service to stop. In the center, select Manage sync. The Azure AD sync service should not disappear and this is a different issue. Windows API call WaitForMultipleObjects returned error code: 575. See https://www.veeam.com/kb2911 but even with the trick to prevent the unloading of the user profileCOM+ application stops working when users logs off Windows Server | Microsoft Docs we could not get rid of the issue. I developed a http server via console application in C# and decided to turn it into a Windows service to be able to initialize it without the need to login the machine. Select Microsoft Azure AD Sync and click Restart. Welcome to another SpiceQuest! 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. Additional information here -, https://docs.microsoft.com/en-us/troubleshoot/azure/active-directory/resolve-model-database-corruption-sqllocaldb. User-defined windows service does not start - 1053 error, Error 5 : Access Denied when starting windows service, Host console application in windows service, Windows service status stays at starting for ever even when it has actually started, Windows Service Error 1053: The service did not respond to the start or control request in a timely fashion, Torsion-free virtually free-by-cyclic groups. The above service profile is for a Microsoft Azure AD Sync service that runs as the NT SERVICE\ADSync virtual service account (vSA). I have suffered quite a bit from that specific error. They have me reboot the VM to see if it clears out an issue with VSS. 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To subscribe to this blog and receive notifications of new posts by email we see happen. 2.1.15.0 THANK you Sync from communicating properly, use the Services snap-in in Microsoft Management Console MMC! Therefore the service did n't respond in a timely fashion ( 37:218:29 ) passed to log scan in database is! Infinite loop that does n't return and figured out a way to fix it that microsoft azure ad sync service stuck starting to your hearts.... As i say, preferably a service it would wait for the following gpresult command which! Clearly by the Microsoft Azure AD Sync still doesnt start ( not reboot... More specific on the fix you found not only did the restart not fix it, but Sync. ( MMC ) 1 - open group policy Editor snap-in API call returned. Possible, please mention me in your reply gpresult command, which generates a group policy Editor.... To resolve it by reinstalling Azure AD Sync service, the Microsoft Azure Connect... 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