check this blog to solve the problem of malwarebytes will not open
Solution 1: Run Malwarebytes Chameleon
A lot of users have reported that they are not able to open Malwarebytes. The cause of this problem could be some malware infection. Hence, Malwarebytes provides its users with a unique tool that could guard and protect it for Windows against various kinds of malicious programs. You can use Malwarebytes Chameleon to get the program running.
Here’s how you can install Malwarebytes Chameleon on your PC right now :
Step 1 – You need to download the application from the official website. Visit the Malwarebytes Chameleon page and download the tool.
Step 2 – After the download is completed, extract the contents of the folder.
Step 3 – You must open the SHM Help File and follow all the instructions.
Step 4 – If you are not able to open the help file, we would recommend you to run the files by simply hitting Enter on your Keyboard or double-clicking until one of them opens.
Step 5 – Now follow the instructions thoroughly.
Solution 2: Run In Safe Mode
Follow the simple steps to run the Malwarebytes in Safe Mode:
Step 1 – Restart your PC.
Step 2 – When you see the windows logo on the screen, hit the F8 key on the Keyboard. If Window starts up normally, you need to restart the PC again and follow the same steps.
Step 3 – Now you will be able to witness a black screen with some white text.
Step 4 – Click on Safe Mode with the help of arrow keys on Keyboard and hit Enter.
Step 5 – It will take some time to load up. Your screen will be lower resolution and will have only a few colours. Everything will look different from the usual. Once the desktop loads up, open Malwarebytes and run a scan.