PUM.Optional.DisallowRun is Malwarebytes' detection name for potentially unwanted modifications (PUMs)in the Windows registry where users are prevented from running specific computer programs that could aid them in manually removing malware. For example the Registry Editor, the Command Prompt, or the Microsoft Management Console.
The following registry entry is added:Under:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun
Entry:{random 1 digit number}={executable file name of computer program}
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.DisallowRun could have been added to the system by malware or PUP.
When a Potentially Unwanted Modification (PUM)is detected on your computer, Malwarebytes for Windowsdoes 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 Windowsignore a PUM, you must add the PUM to the Allow list. Here’s how to do it.
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