Microsoft has fixed a known issue causing intermittent failures when saving and copying files on Windows 11 22H2 devices (specifically when using network shares).

This recurring problem only affects Windows applications that use the CopyFile API and are also great conscious addressaccording to Redmond.

Microsoft says Windows devices are at a higher risk of being affected by this particular issue when using specific commercial or enterprise security software that uses extended file attributes.

There have been no reported cases of the impact of the file copy feature in File Explorer; however, specific applications using the CopyFile API may experience issues.

Users of Microsoft Office applications such as Word and Excel may also experience copying and saving issues, but only when using 32-bit versions. In such cases, affected users will see “Document not saved” error messages.

It’s also important to note that those using Windows devices in personal or unmanaged commercial environments are unlikely to encounter this known issue.

Microsoft has solved this problem with the KB5027231 Windows 11 Cumulative Update released today as part of this month’s Patch Tuesday.

“This update fixes a known issue that affects 32-bit applications that support large addresses and use the CopyFile API. You may encounter issues when you save, copy, or attach files”, Microsoft said Today.

“If you are using commercial or enterprise security software that uses extended file attributes, this issue will likely affect you.”

Already fixed on Windows 10 and Windows 11 21H2

The company solved the problem on Windows 10 and Windows 11 21H2 three weeks ago via Known Issues Rollback (KIR)a Windows feature that rolls back non-security bug fixes pushed through Windows Update.

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

You can download group policies from the links below:

After installation, you can find Group Policy under Computer Configuration -> Administrative Templates.

To deploy Known Issues Restore, you must access the Local Computer Policy or Domain Policy of your domain controller using the Group Policy Editor to select the version of Windows you are using. want to target.

More information on deploying and configuring KIR Group Policies is available at Microsoft support website.