Microsoft April Windows Updates Cause Third-Party Backup Failures
Why it matters: Indian critical infrastructure operators must assess their backup systems for compatibility with recent Windows updates and prepare for potential recovery challenges.
Microsoft has confirmed that its April 2026 security updates are causing significant failures in third-party backup applications. The issue specifically affects software utilizing the psmounterex.sys driver, leading to operational disruptions. Organizations relying on these backup solutions should be aware of the problem and monitor for official resolutions from Microsoft.
Source: BleepingComputer