Microsoft: Windows Server 2025 changes causing app crashes

September 8, 2026 · BleepingComputer · Severity: MEDIUM

Microsoft warned customers that Windows Server 2025 changes may cause application crashes for certain legacy software. The compatibility issues stem from changes in the Windows kernel and security defaults. Microsoft recommends testing applications thoroughly before deployment.

Key Takeaways

Microsoft warned customers that recent memory management changes in Windows Server 2025 are causing application crashes on affected systems.
Organizations running Windows Server 2025 should test application compatibility before deploying the latest updates with memory management changes.
The crashes stem from Microsoft's memory management modifications in Windows Server 2025 impacting how applications interact with system memory.