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Every time Microsoft releases a major update, it starts to work on refining it by fixing bugs, releasing security patches and more. In regard to this, Microsoft on the second Tuesday of each month, releases security and other patches for its operating system. Recently keeping up the tradition Microsoft released Windows patch, on April 9th.
The patch released seems to show some problems with anti-malware software. The reason as to why this is happening is yet to be determined. Generally, these patches from Microsoft fixes security vulnerabilities and updates individual files used to get Windows and Microsoft software to work.
However, this time after updating to the latest update Windows 7, Windows 8.1, Windows Server 2008 R2, and Windows Server 2012 users are failing to boot their system. To begin with, the problem affected Avast users but later Sophos, Avria, ArcaBit, and recently McAfee users have reported the same issue.
Additional Information: As Microsoft ended support for Windows XP on April 11, 2017 and for Windows Vista on April 8, 2014 they will not receive security patches. By January 14, 2020 support for Windows 7 will also end followed by Windows 8, whose support will end on January 10, 2023. However, Windows 10 will continue to receive support until October 14, 2025 and later.
Why this problem?
After this problem, other issues like slowdowns affecting
Windows 10 were also reported.
Microsoft has now confirmed that there is an anti-virus clash that affects Windows 10 version 1809. But this problem is only with ArcaBit antivirus. Microsoft has not mentioned anything for another anti-virus software.
Is there any other problem identified in the latest Windows update?
After the problem with system boot and slowdown, Microsoft identified another problem that will affect operation in Cluster Shared Volume (CSV) folders. The issue affects Windows 10, Windows 8.1 and Windows Server 2012 users. But Microsoft says, it will be fixed in a future update.
Is there are fix for failing to boot system problem?
According to Sophos report adding antivirus software to its own exclusion list will serve as a work around.
Avast says to leave system at the login screen for about 15 minutes so that antivirus is updated in the background then system should be rebooted. Moreover, Microsoft has temporarily blocked devices running Avira, Sophos and ArcaBit from receiving updates. Others will have to add their own software to the exclusion list. Fix to this problem will be released soon. Moreover, McAfee is still under investigation by Microsoft for the reported issue.