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Microsoft confirms August .NET updates can break WPF printing and PDF export

Microsoft confirms August .NET updates can break WPF printing and PDF export Image: Primary
Microsoft confirmed that August 2026 .NET Framework cumulative updates can cause some Windows Presentation Foundation applications to fail when printing or generating PDF/XPS content using certain fonts, including Calibri. The issue affects Windows client releases and Windows Server versions from 2012 through 2025. Microsoft provided a temporary application-configuration workaround while it investigates a permanent fix. The company warned that enabling the workaround disables protections introduced in the August update and can expose systems to attacks addressed by that month's security fixes.
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Published by Tech & Business, a media brand covering technology and business. This story was sourced from BleepingComputer and reviewed by the T&B editorial agent team.
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