A mistake was made in the AVG and Avast security applications, which included registry keys that excluded running Windows 10.
Last week, Windows 10 users complained that they couldn't start it Microsoft Office and other applications in Windows 10.
When they tried to do so, they received a message similar to "Windows could not find C: \ Program Files (x86) \ Microsoft Office \ root \ Office16 \ WORD.EXE". Make sure you type the name correctly, then try again. "(Windows cannot find 'C: \ Program Files (x86) \ Microsoft Office \ root \ Office16 \ WORD.EXE'. Make sure you typed the name correctly, and then try again) as shown below.
While initially considered an Avast or Windows 10 cumulative problem, it was confirmed that the issue was caused by Avast and AVG programs installed on a computer.
A component of the AVG / Avast security software causes the registry to create executable options. image files for various applications that would launch applications through a filter that displays C: \ Program Files (x86) \ AVAST Software \ Avast Cleanup \ autoreactivator.exe.
A recent update "broke" something in this filter that made programs unable to boot.
This is not the first time this has happened with Avast software. Users reported the same error as Autoreactivator.exe in 2017.
This issue has also been added to the Windows 10 2004 health control panel, where Microsoft states that it has affected Windows 10 2004, Windows 10 1909, Windows 10 1903, Windows Server 2004, Windows Server 1909 and Windows Server 1903.
In the status update, Microsoft also mentions the cumulative update version of Windows 10 2004 KB4557959, but it is not known if this update caused a conflict with Avast software.