On April 14, Microsoft released some cumulative updates for its supported versions Windows 10. OR KB4549951 is one of them and According to reports presents problems to some users.
The following is one of the reports:
Environment: Pro Workstation running the version 1909 in Domain network.
This update KB4549951 slows down networking. Outlook 365 on hosted Exchange took several minutes to load and froze. Remote Desktop was showing a black screen on the target computers. This update also causes it to freeze software VM. Everything continued to work normally after uninstalling and deferring updates for 30 days.
Some people are also reporting that this particular update deletes archives. For those affected, their files were moved or deleted after the update. Users report that after installing the update, their settings disappeared, and their personal files were moved to the Recycle Bin or simply deleted all together.
Interestingly, on some systems, updating me does not delete files or settings. It simply cannot be installed or, when finally installed, causes BSoDs, with the following errors PAGE_FAULT_IN_NONPAGED_AREA, CRITICAL_PROCESS_DIED, ACPI_BIOS_ERROR, INACCESSIBLE BOOT DEVICE, MEMORY_MANAWATION_.
Finally, for some users, the update greatly affects the performance of their operating system and causes connectivity problems.
Microsoft has not yet identified the problems so far. If the update has problems on your computer, you can uninstall it manually.
