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Find information on known issues and the servicing status for Windows 10, version 1809 and Windows Server 2019. For immediate help with Windows update issues, click here if you are using a Windows device to open the Get Help app or go to support.microsoft.com. Follow @WindowsUpdate on X (formerly Twitter) for Windows release health updates. If you are an IT administrator and want to programmatically get information from this page, use the Windows Updates API in Microsoft Graph.
Current status as of May 2, 2025
Windows 10 Enterprise LTSC 2019, Windows 10 IoT Enterprise LTSC 2019, and Windows Server 2019 will have mainstream support until January 9, 2029.
As of May 11, 2021, all editions of Windows 10, version 1809 and Windows Server 2019, except LTSC editions, have reached end of servicing. Devices running these editions will no longer receive security updates containing protections from the latest security threats.
As always, we recommend that you upgrade eligible devices to the latest version of Windows as soon as possible to ensure that you can take advantage of features and advanced protections from the latest security threats. For information about servicing timelines and lifecycle, see the Windows 11 release information, Windows 10 release information, Windows Server 2019, Windows Lifecycle FAQ, and Microsoft Lifecycle Policy search tool.
Known issues
See open issues, content updated in the last 30 days, and information on safeguard holds. To find a specific issue, use the search function on your browser (CTRL + F for Microsoft Edge).
| Summary | Originating update | Status | Last updated |
|---|---|---|---|
| Domain controllers may restart repeatedly after installing April security update Affected DCs will experience LSASS crashes. A mitigation is available through Microsoft Support. | OS Build 17763.8644 KB5082123 2026-04-14 | Resolved KB5091573 | 2026-04-19 13:51 PT |
| Windows Server 2022 and Server 2019 unexpectedly upgraded to Windows Server 2025 This issue has been mitigated. It was observed when updates were managed through some third-party applications. | N/A | Resolved KB5082123 | 2026-04-14 18:27 PT |
Issue details
April 2026
Domain controllers may restart repeatedly after installing April security update
| Status | Originating update | History |
|---|---|---|
| Resolved KB5091573 | OS Build 17763.8644 KB5082123 2026-04-14 | Resolved: 2026-04-19, 14:00 PT Opened: 2026-04-16, 18:50 PT |
After installing the April 2026 Windows security update (KB5082123) and rebooting, domain controllers (DCs) in environments with multiple domains in the forest that use Privileged Access Management (PAM), might experience LSASS crashes during startup. As a result, affected DCs may restart repeatedly, preventing authentication and directory services from functioning, and potentially rendering the domain unavailable.
Note: This issue affects Windows Server only. It does not impact consumer PCs or personal devices. The scenario is unlikely to be observed on individual-use devices that are not managed by an IT department.
Resolution: This issue is resolved by the out-of-band (OOB) update, released April 19, 2026, in the Microsoft Update Catalog. It can be found as KB5091573. For additional guidance, see How to download updates from the Microsoft Update Catalog.
Affected versions:
- Client: None
- Server: Windows Server 2025; Windows Server 2022; Windows Server, version 23H2; Windows Server 2019; Windows Server 2016
November 2024
Windows Server 2022 and Server 2019 unexpectedly upgraded to Windows Server 2025
| Status | Originating update | History |
|---|---|---|
| Resolved KB5082123 | N/A | Resolved: 2026-04-14, 10:00 PT Opened: 2024-11-09, 12:16 PT |
Windows Server 2025 is intended to be offered as an Optional upgrade in Windows Update settings for devices running Windows Server 2019 and Windows Server 2022. Two scenarios were observed in certain environments:
- Some devices upgraded automatically to Windows Server 2025 (KB5044284). This was observed in environments that use third-party products to manage the update of clients and servers. Please verify whether third-party update software in your environment is configured not to deploy feature updates. This scenario has been mitigated.
- An upgrade to Windows Server 2025 was offered via a message in a banner displayed on the device’s Windows Update page, under Settings. This message is intended for organizations that want to execute an in-place upgrade. This scenario has already been resolved.
The Windows Server 2025 feature update was released as an Optional update under the Upgrade Classification: “DeploymentAction=OptionalInstallation”. Feature update metadata must be interpreted as Optional and not Recommended by patch management tools.
We advise organizations to use Microsoft-recommended methods to deploy Windows Server feature updates.
Resolution: This issue is resolved and Microsoft has re-enabled the upgrade offer via the Windows Update settings panel. For more information on Feature Update from the Windows Server Setting Dialog, see Perform an in-place upgrade of Windows Server at Microsoft Learn.
Affected platforms:
- Client: None
- Server: Windows Server 2025; Windows Server 2022; Windows Server 2019
Report a problem with Windows updates
To report an issue to Microsoft at any time, use the Feedback Hub app. To learn more, see Send feedback to Microsoft with the Feedback Hub app.
Need help with Windows updates?
Search, browse, or ask a question on the Microsoft Support Community. If you are an IT pro supporting an organization, visit Windows release health on the Microsoft 365 admin center for additional details.
For direct help with your home PC, use the Get Help app in Windows or contact Microsoft Support. Organizations can request immediate support through Support for business.
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