Microsoft: August updates break printing, PDF export in WPF apps
Summary
Microsoft has confirmed that .NET Framework updates released in August 2026 are causing issues with printing and PDF export functionalities in WPF applications. This problem affects applications built using the Windows Presentation Foundation framework.
IFF Assessment
This issue negatively impacts software functionality, potentially leading to disruptions for users and organizations relying on these applications for critical tasks.
Defender Context
Defenders should be aware of this reported bug affecting .NET Framework applications. It highlights the importance of thorough testing after applying OS and framework updates, as even seemingly non-security-related patches can introduce significant functional regressions. Organizations may need to temporarily roll back updates or implement workarounds for affected applications.