we heard from several customers that the newest Windows 10 Update makes QuarkXPress 9 lose its activation.
As QuarkXPress 9 was never supported on Windows 10, we have no information why this happens or how to prevent that.
Only two solutions we can offer:
- Please revert to Windows 7 or 8.0, as QuarkXPress 9 was supported on these versions of Windows: viewtopic.php?f=14&t=4608
- Please upgrade to a version of QuarkXPress that supports Windows 10, so QuarkXPress 2015 or higher: viewtopic.php?f=8&t=27713