Microsoft has released out-of-band (OOB) updates for some .NET Framework and .NET versions to address XPS display issues triggered by December 2022 cumulative security updates.
Users will experience null reference exceptions and images or glyphs displaying incorrectly when viewing XPS documents rendered using affected Windows Presentation Foundation (WPF) based apps.
“This update addresses a known issue which might cause XPS documents which utilize structural or semantic elements like table structure, storyboards, or hyperlinks to not display correctly in WPF-based readers,” Microsoft added yesterday.
The emergency updates released yesterday are not delivered via Windows Update and will not install automatically on affected devices.
You can download the standalone .NET Framework update packages from the Microsoft Update Catalog (a list of all available updates and download links is available in this support document).
Windows admins can also manually import these updates into Windows Server Update Services (WSUS) and Microsoft Endpoint Configuration Manager.
