PUM.Optional.MisplacedCertificate is Malwarebytes detection name for a potentially unwanted modification that puts the Malwarebytes certificate in the Disallowed category. This disables users from using signed Malwarebytes programs.
The following registry key was added:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\SystemCertificates\disallowed\
Certificates\C1437F2BC6F11F4806EAD857982457BF7828CE15
Malwarebytes can modify this registry value data back to its Windows default setting without user interaction.
Also, we advise users to do a full system scan as PUM.Optional.MisplacedCertificate could have been added to the system by malware or PUP.
When a Potentially Unwanted Modification (PUM) is detected on your computer, Malwarebytes for Windows does not know whether it was authorized. Optimization software, malware, and Potentially Unwanted Programs (PUPs) are known to make these types of changes, hence they are regarded as potentially unwanted by design. To have Malwarebytes for Windows ignore a PUM, you must add the PUM to the Allow list. Here’s how to do it.
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