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I had downloaded malwarebytes....

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Hello and welcome to MBAM forum, kevninpcurry5: :)

No, you don't need to buy it again - the license is valid for a lifetime.

All you will need to activate a fresh install of the program is the license ID and key you obtained at the time of the original purchase.

(If you bought online, it will be in a confirmation email from the reseller, Cleverbridge. If you purchased boxed, it will be in the box, e.g. on the CD sleeve.)

So, you'll need to have that handy & available before trying to reinstall the program, as the clean reinstall will remove that information from your computer.

Yes, doing a Windows system restore can corrupt things, including anti-virus and security apps & their databases.

Try this first -- a clean uninstall and reinstall with the mbam-clean utility ---> see the instructions below.

Be sure to reboot when prompted.

Let us know if this resolves your issue,


PS There are some additional helpful suggestions >>HERE<< and some how-to videos >>HERE<<. :)


  • If you are running MBAM PRO, please be sure you have your license ID and key available (sent via email at the time of online purchase, or in the box).

You can also look up your ID and Key from the Registry and copy and paste it to a Notepad document before running the mbam-clean utility.

Location for Windows x86

HKEY_LOCAL_MACHINE\SOFTWARE\Malwarebytes' Anti-Malware

Location for Windows x64

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Malwarebytes' Anti-Malware
  • Download and run mbam-clean.exe from HERE.
  • It will ask to restart your computer; please allow it to do so - this is very important!
  • After the computer restarts, download the latest version of Malwarebytes' Anti-Malware from HERE, then temporarily disable your Anti-Virus and run the installer. (Ignore all 'Recommended' or 'Sponsored' software which are prominently displayed on the mirror sites -- they are ads and MBAM does not have any association with them.)
  • If you are using MBAM PRO, you will need to reactivate (register) the program using the license ID & key.
  • Launch the MBAM program and (if you are using MBAM PRO) set the Protection and Registration.
  • Then go to the UPDATE tab (if not done during installation) and check for updates.
  • Restart the computer again and verify that MBAM is in the system tray (if using the PRO version).
  • Now set up any file exclusions, as may be required in your Anti-Virus/Internet-Security/Firewall applications, and restart your Anti-Virus/Internet-Security applications. You may use the guides posted in the FAQs HERE, or ask and we'll explain how to do it.

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