Windows Patch Warning Windows 10 boot problem when Windows 7 expanded AV clashes

Windows Patch

The April 2019 patches of Microsoft are now causing problems with Windows 10, Windows 7 and Windows 8.1.

Security updates and monthly roll-ups from Microsoft in April 2019 become a greater problem than was originally known.

Last week, after installing Microsoft’s April 9 updates, Windows 7 users with Sophos and Avast antivirus started reporting trouble.

Users suggested that after security-only and monthly roll-Updates were installed, Windows 7, Windows 8.1, Windows Server 2008 R2, and Windows Server 2012 did not boot.

Despite user reports of boot problems with Avast users, Microsoft only confirmed problems with Sophos users at the time.

And even though some reports of similar problems and slowdowns have affected Windows 10 after the April 2019 updates have been installed, they have not spread and have not been caused necessarily by Microsoft April software updates.

Microsoft now confirmed the existence of an antivirus confrontation affecting Windows 10 version 1809 but only ArcaBit, a little-known Polish antivirus supplier.

“Microsoft and ArcaBit have identified a problem with devices with the installed ArcaBit antivirus software that can cause the system to fail after restarting the update,” Microsoft said Saturday’s update about known issues affecting Windows10 1809.

Microsoft has also identified a problem in the Cluster Shared Volume (CSV) folders affecting the rename operation. This problem will be fixed in a future update. Windows 10 and Windows 8.1 and Windows Server 2012 are affected by the issue, but not Windows 7.

“An error,’ STATUS BAD IMPERSONATION LEVEL (0xC00000A5)’ may fail to perform certain operations, such as renaming, on files or folders that are on a Cluster Shared Volume (CSV). This occurs when you operate on a CSV owner node from a process that has no administrator privilege.”

On April updates for Avira users, the Windows maker now implemented an update block for Windows 7, Windows 8.1 and corresponding Windows Server versions. “Microsoft temporarily blocked devices from receiving this update if Avira anti-virus software is installed. We are currently investigating this problem with Avira and, if available, will provide an update,” says Microsoft.

The company has also confirmed that Avast for Business, Avast CloudCare and AVG Business Edition have problems with the boot on Windows 7. Avast published emergency updates for customers to resolve this problem and details procedures in a support note to solve problems.

“After installing and restarting the update, Microsoft and Avast have identified a problem with devices that run on Avast for Business, Avast CloudCare and AVG Business Edition antivirus software. Devices can be rejected in login or a welcome screen, and you might not be able to register after a longer period of time,” said Microsoft.

Mark Funk
Mark Funk is an experienced information security specialist who works with enterprises to mature and improve their enterprise security programs. Previously, he worked as a security news reporter.