Windows Update loop

Question

2026-05 .NET 8.0.27 Security Update for x64 Client (KB5093447)

Successfully installed on 05/13/26

Subsequently appeared as available Update and continues to fail as follows:

2026-05 .NET 8.0.27 Security Update for x64 Client (KB5093447)

Error code 0x800706be

I have tried several recommended fixes but nothing has worked.

Answer 1

Hi, good day!

What is your Windows operating system and version?

Press Windows key+R to open Run then type: winver

Press Enter

Please take a screenshot of the resulting window and post it in your next response. Note: Don't include any personal information as Microsoft Q&A is a public forum.

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Please try to download and run the .NET Framework Repair Tool.

https://www.microsoft.com/en-us/download/details.aspx?id=30135

After that, please try to install the update again.

I look forward to receiving your update and I'm willing to collaborate with you till we resolve the issue. Do keep me informed by clicking "Add comment" below instead of Yes or No button.

Answer 2

KB5093447 is a .NET 8.0 servicing update. .NET 8.0 servicing updates are upgrades: the latest update replaces and removes the previous 8.0 update when installation succeeds.

Because the update shows as installed and then repeatedly reoffers and fails with 0x800706be, the system is likely in a partial/looping state for this specific .NET 8.0 servicing level.

To break the loop using only supported mechanisms from the context:

1. Confirm that Windows itself is fully up to date
   • On Windows 11, open Settings → Windows Update and install all offered quality updates and Microsoft product updates (if enabled). These include the latest servicing stack and cumulative updates that .NET servicing relies on.
   • If any update fails with a different error, resolve that first using the update’s KB article and update history page for Windows 11.
2. Manually install the latest .NET 8.0 servicing update
   • .NET 8.0 servicing updates are cumulative upgrades: the latest one supersedes earlier 8.0 updates.
   • Install the most recent .NET 8.0 update available for Windows 11 (for example, a newer servicing build than 8.0.27) from Windows Update or from the Microsoft Update Catalog entry for that newer KB.
   • After installation, restart the device.
   • When a newer .NET 8.0 servicing update is successfully installed, the previous 8.0 update (such as the one corresponding to KB5093447) is removed and should no longer be offered.
3. If Windows Update still offers KB5093447 and fails
   • Use the Microsoft Update Catalog to locate the exact KB and download the package that matches the device architecture (x64) and Windows 11 version.
   • Install it manually and restart.
   • If the manual install also fails, collect the CBS.log and WindowsUpdate.log and then use assisted support for .NET 8.0 updates.
4. Use assisted support if the loop persists
   • For .NET 8.0 servicing issues that persist after installing the latest servicing update, use assisted support for .NET Core/.NET 8.0. Being on the latest supported servicing level is required for support.

This approach aligns with how .NET 8.0 servicing updates behave (each new update replaces the previous one) and with standard Windows Update troubleshooting (ensuring Windows and servicing stack are current, then manually installing the relevant package, and escalating with logs if needed).

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References:

• .NET 8.0 Update - January 13, 2026
• Troubleshoot Windows Update error code 0x800f0823
• What are Windows Update client policies?
• .NET 8.0 Update - July 08, 2025 (KB5063326)
• .NET 8.0 Update - April 08, 2025 (KB5056686)
• .NET 8.0 Update - August 5, 2025 (KB5064838)