If Malwarebytes Anti-Ransomware will not open because of an infection, you can use Malwarebytes Chameleon to launch the program. While some products have trouble running on infected machines, Malwarebytes Anti-Ransomware now includes our powerful Chameleon tool which has been designed specifically to get Malwarebytes Anti-Ransomware to run when an infection is present.

Unless otherwise required, do not run Malwarebytes Chameleon. Chameleon should only be run when you cannot open Malwarebytes Anti-Ransomware. If you have additional questions or need assistance with this particular scenario, please contact support.

Fix 1.1: Before saving Malwarebytes Anti-Ransomware or any of your security programs, rename them first. Once you have clicked to a download link you will see a Save dialog like below.

Fix 1.2: Change Malwarebytes Anti-Ransomware or another security program installation file extension.
Malwarebytes Anti-Ransomware won`t run Fix 2.1: Rename the main executable file.

Fix 2.2: Boot your computer in the Safe mode.
Restart your computer. After hearing your computer beep once during startup, but before the Windows icon appears, press F8. Instead of Windows loading as normal, a menu should appear. Select the first option, to run Windows in Safe Mode. Run Malwarebytes Anti-Ransomware or your security program.

Fix 2.3: Log in Windows using a new created user account.
Click Start -> Settings -> Control panel. Click User Accounts and create a new account. Reboot your computer and login Windows using a previously created user account. Run Malwarebytes Anti-Ransomware or your security program.

Fix 2.4: Run TDSSKiller. Probably your computer is infected with TDSS trojan/rootkit. It may block various antivirus and antispyware programs from running.
Download TDSSKiller from here and unzip to your desktop. Open tdsskiller folder and run TDSSKiller. Follow the prompts.

Fix 2.5: Use Inherit.exe to fix inappropriate permissions. Use this fix, when you see a box that states “Windows cannot not access the specified device, path, or file. You may have inappropriate permissions to access the item”.

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