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Find information on known issues and the status of the Windows 10, version 22H2 rollout. 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.
- Check if your current Windows 10 PC can upgrade to Windows 11.
- Purchase a new Windows 11 PC.
- Purchase Extended Security Updates (ESU) for organizations of all sizes as previously announced in April 2024.
- For the first time ever, you can enroll your personal Windows 10 PC in the ESU program. See Windows 10 Consumer Extended Security Updates (ESU) program for detailed information on the ESU program for personal devices.
Known issues
| Summary | Originating update | Status | Last updated |
|---|---|---|---|
| Incorrect notifications that "Microsoft Defender Antivirus is turned off" Microsoft Defender Antivirus remains active and functioning correctly despite notifications following the latest update. | N/A | Confirmed | 2026-08-28 16:02 PT |
Issue details
August 2026
Incorrect notifications that "Microsoft Defender Antivirus is turned off"
| Status | Originating update | History |
|---|---|---|
| Confirmed | N/A | Last updated: 2026-08-28, 16:02 PT Opened: 2026-08-28, 15:34 PT |
After installing the latest updates for Microsoft Defender Antivirus, notifications might appear stating that "Microsoft Defender Antivirus is turned off," even though the antivirus is functioning correctly and all settings show it as active. These notifications can appear when Windows starts and intermittently afterward. They persist even if notification settings are turned off.
This issue can be observed in any version of Windows or Windows Server with Microsoft Defender Antivirus running with the latest Defender updates.
Next steps: We are working to release a resolution in a future Microsoft Defender Antivirus update and will provide more information when it is available.
Affected platforms:
- Client: Windows 11, version 26H1; Windows 11, version 25H2; Windows 11, version 24H2; Windows 11, version 23H2; Windows 10, version 22H2; Windows 10, version 21H2; Windows 10 Enterprise LTSC 2019; Windows 10 Enterprise LTSC 2016
- Server: Windows Server 2025; Windows Server 2022; Windows Server 2019; Windows Server 2016; Windows Server 2012 R2; Windows Server 2012
Report a problem with Windows updates
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Need help with Windows updates?
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