Hi huy nguyen,
Welcome to Microsoft Q&A!
You've done the right thing by identifying and uninstalling KB5065426 — this update includes changes to file and print sharing behavior. They are believed to cause compatibility issues with certain programs that rely on legacy image formats, specific printer drivers or rendering methods. Many users have also reported similar or related behaviors as seen here: KB5065426 update stops file and print sharing from working - Microsoft Q&A
Since removing the update restores functionality, uninstalling KB5065426 is a valid short-term workaround. You can either wait for the patch release or an official guidance from Microsoft, as they are aware of issues. Or you can also try out some suggestions to see if anything improves.
1 - Re-check File and Print sharing settings
- Go to Settings > Network & Internet > Advanced network settings
- Ensure File and Printer Sharing and Network Discovery are turned on
- Set your network profile to Private
2 - Update or reconfigure your program if it uses older image formats or shared folders
- Convert images to modern formats (e.g., PNG or JPEG)
Ensure the image path is local and not dependent on SMBv1 or NetBIOS
Run the program as administrator to bypass permission issues
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