Microsoft: August updates break WPF printing, PDF export
August 24, 2026
1 min read
5 views
cybersecurity
malware
news
Microsoft confirmed August 2026 .NET Framework updates cause WPF apps to fail with FileFormatException when printing or exporting PDF/XPS using certain fonts like Calibri. A temporary workaround is available but disables security protections.
Was this article helpful?
0 found this helpful