M.S. Essentials performance problems since possible malware warning
Suggest you scan your computer with one or more free independent scanners…neither of the following should interfere with your installed AV program.
Malwarebytes Free https://www.malwarebytes.org/free/
You may need to reset your browsers: http://malwaretips.com/blogs/remove-adware-popup-ads/#browser
What bug definitions are installed in MSE? When were they installed? What antimalware client is installed in MSE?
If you want to use MSE recommend you review the following to include
Common issues that can affect MSE: Microsoft
Security Essentials Installation Checklist. Be sure you uninstall Avast to include using the Avast Removal Benefit –
of anti-malware product removal tools.
Further information regarding MSE can be found at MSE
Consolidated FAQ and at
If the above suggestions do not help or are not applicable to your condition, you may need to uninstall/reinstall MSE.
You should be able to remove MSE from Control Panel. Any problems uninstalling see: Uninstalling
Microsoft Security Essentials
Recommend you restart the computer to ensure the uninstall is complete.
You can download a new MSE Installation File from
If you do not want to use MSE you should remove MSE and install a third party program.
Look in Windows Updates – when were the last updates installed? Is KB3197869 installed?
Do you have backups and copies of any changes made by Win Utilities?
Since you have been using multiple antivirus programs concurrently (which is not recommended) as well as using registry cleaners (which is also not recommended) your computer may have a number of issues.
The easiest blend may be to seek advice from a professional computer repair technician.
Alternatively you may want to reformat/reinstall the OS or restore your computer to factory settings…be sure you back up data/documents/photos/music, etc.