Sage peachtree program is crashing after windows update last night.

Sage recognizes a current Sage 50/Peachtree crash after recent Windows updates and recommends temporarily removing the affected Windows security update, then testing Sage again.^1^

Identify the update without relying on Update History

Current reports specifically associate Sage 50 Version 2026 on Windows 11 with KB5132061.^2^ This update applies to several Windows 11 versions and editions, so verify that it is installed rather than uninstalling an unrelated update.^3^

1. Right-click Start and select Terminal (Admin).
2. Run:

Get-HotFix -Id KB5132061 -ErrorAction SilentlyContinue

Get-WindowsPackage -Online |
  Where-Object PackageName -Match '5132061' |
  Select-Object PackageName, PackageState, InstallTime

Get-HotFix lists updates supplied through Windows component-based servicing, although its results can vary; the second command provides an additional check when the first returns nothing.^4^

• If either command shows KB5132061 or a package containing 5132061, continue below.
• If neither finds it, do not remove a random update. Follow Sage’s current knowledge-base instructions for the update affecting your installed Sage version.^5^

Remove KB5132061 temporarily

Removing a security update reduces protection until it is reinstalled, so use this as a temporary compatibility workaround.

1. Open Start → Settings → Windows Update.
2. Select Update history → Uninstall updates. You do not need the update to appear in the main history list; inspect the separate uninstallable-updates list.
3. Find KB5132061, select Uninstall, and approve the prompt.
4. Restart Windows.
5. Open Sage 50/Peachtree and test the same company file and operation that previously caused the crash.

Microsoft notes that some updates cannot be removed.^6^ If KB5132061 is installed but has no Uninstall option, do not attempt to delete its files manually.

If the crash remains

• If Sage still crashes after the confirmed update rollback, reinstall the security update through Settings → Windows Update → Check for updates, because the rollback did not isolate the cause.
• Record your Sage version, Windows version from winver, and whether the crash occurs before or after opening a company file.
• Contact Sage Technical Support for the current compatibility fix or updated workaround.^7^

Avoid resetting Windows Update components or reinstalling Windows at this stage: those procedures address update installation or Windows servicing failures, not this vendor-recognized Sage application crash.

References

1. Sage 50 closing unexpectedly after installing Windows updates
2. Community Hub
3. Windows 11, versions 25H2 and 26H2
4. Get-HotFix-Description
5. Crashing after installing Windows updates - us-kb.sage.com
6. Windows 11
7. Technical Support | Sage US