Go here to Doug KNox's Windows® XP File Association Fixes
Run 9th down on left... EXE File Association Fix
... the EXE not EML one.
First you MUST BACK UP
the registry. This step involves making changes in the registry. Always back up your registry before making any changes.
Go to Start » Run and type: regedit
On the left side, click to highlight My Computer
at the top.
Go up to File » Export
Make sure in that window there is a tick next to "All" under Export Branch.
Leave the "Save As Type" as "Registration Files".
Under "Filename" put RegBackup
Choose to save it to C:\
Click save and then go to File » Exit.
Or you can download and use ERUNT
which is an excellent free tool that allows you to to take a snapshot (backup) of your registry before making changes and restore it when needed.Rerun MBAM (MalwareBytes) like this:
Open MBAM in normal mode and click Update
tab, select Check for Updates
scan and scan (normal mode).
After scan click Remove Selected
, Post new scan log
into normal mode.