PUM.Optional.NoToolbarCustomizeHijack

Short bio

PUM.Optional.NoToolbarCustomizeHijack is Malwarebytes' detection name for a potentially unwanted modification (PUM)in the Windows registry where the option for the user to set which icons should appear in the Internet Explorer toolbar is disabled.

System modifications

The following registry value data is modified:UnderHKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\ExplorerFrom:NoToolbarCustomize=0To:NoToolbarCustomize=1

Remediation

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.NoToolbarCustomizeHijack could have been added to the system by malwareor a PUP.

Add an exclusion

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.

1. When a PUM appears in the list of Scan results.
2. Uncheck the entry or entries related to the PUM.
3. Then click on Next.
4. You will see a prompt giving you several options.
5. Choosing Always ignorewill add the PUM to the Allow List.
6. You can remove them there when you decide they should no longer be ignored.
7. When the PUM is on the Allow listit will no longer show up in your Scan results.