Microsoft has addressed a known issue causing intermittent failures when saving and copying files on Windows 11 22H2 devices (especially when working with network shares).
This recurring issue only impacts Windows apps that are using the CopyFile API and are also large address aware.
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 utilizes extended file attributes.
No instances have been reported regarding file copying functionality impact within File Explorer; however, specific applications utilizing the CopyFile API may encounter issues.
Users of Microsoft Office applications such as Word and Excel may also experience copying and saving problems, but only when utilizing 32-bit versions. In such cases, impacted users will see “Document not saved” error messages.
It’s also important to note that those using Windows devices in personal or non-managed commercial environments are unlikely to encounter this known issue.