PUP.Optional.NotChromeRun is Malwarebytes’ generic detection name for values under the registry key HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run, that point to a file called Chrome.exe. However, the said file is not the actual Chrome browser executable. In most cases, this is a Chromium build that is planted by malware or PUPs.
PUP.Optional.NotChromeRun is a “removal only” detection and does not offer protection.
Malwarebytes can detect and remove PUP.Optional.NotChromeRun without further user interaction.
When PUP.Optional.NotChromeRun 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 PUP.Optional.NotChromeRun, you must add PUP.Optional.NotChromeRun to the Allow list. Here’s how to do it.