Microsoft reports that some 32-bit applications are affected by recurring failures when saving and copying files across multiple versions of Windows (particularly when copying to network shares).

The intermittent issue only affects apps that are great conscious address and also use the CopyFile API under Windows 11 21H2 and 22H2 (after installing KB5023774 or later updates) or Windows 10 21H2 and 22H2 (after installing KB5023773 or more recent updates).

“Windows devices are more likely to be affected by this issue when using certain commercial/enterprise security software that uses extended file attributes,” Microsoft said.

According to Redmond, there have been no reports of File Explorer’s file copy functionality being affected; however, the CopyFile API used in specific applications may be affected.

Microsoft Office applications such as Word and Excel are only susceptible to this issue when using 32-bit versions, with affected users potentially receiving “Document not saved” error messages.

This known issue is unlikely to be experienced by consumers using Windows devices in personal or unmanaged business environments.

The latest version of Windows 11 is still waiting for a fix

Of all the affected Windows versions, Microsoft has yet to resolve file copy and save failures on the latest version, Windows 11, version 22H2.

However, the company says affected customers can work around the issue by saving or re-copying the files until a fix is ​​ready.

Microsoft has already solved the problem on Windows 10 and Windows 11 21H2 via Known Issues Rollback (KIR)a Windows feature designed to roll back buggy non-security fixes pushed through Windows Update.

Windows administrators should install and configure KIR Group Policy on all affected corporate-managed devices to resolve these file transfer and saving issues.

You can download the group policies by clicking on the links below:

After installation, Group Policy is located under Computer Configuration -> Administrative Templates. To deploy Known Issues Restore, you must access Local Computer Policy or Domain Policy on your domain controller using the Group Policy Editor to choose the version of Windows you want to target.

You can find more information about deploying and configuring KIR Group Policies at Microsoft support website.