Tag: printing issues

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Windows desktop application on laptop with PDF document and printer nearby in office setting.

Microsoft Updates Disrupt Printing, PDF Export in WPF Apps

If you've installed the August 2026 .NET Framework cumulative update, you may be experiencing printing and PDF export issues in your WPF applications, particularly with certain fonts like Calibri. This update has caused a System.IO.FileFormatException error, disrupting workflows that rely on printing and PDF/XPS content generation.

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