Malwarebytes won`t install, run or update � How to fix it

Malwarebytes won`t install, run or update � How to fix it

If Malwarebytes Anti-malware or any of your security programs won�t install, run or update, then you�ve probably got malware or the effects of malware on the computer (some types of malware will disable Malwarebytes Anti-malware and other security tools).

Malwarebytes Anti-malware or any of your security programs won`t install

Fix 1: Before saving Malwarebytes Anti-malware or any of your security programs, rename them first.
You clicked on a download link and a Save dialog opens. Change file name and click on Save. For example, before you save Malwarebytes Anti-malware, rename mbam-setup.exe to something like mapp.exe (or use any random name) and then click on Save and save it to your desktop. Double Click mapp.exe to install the application.
Note: several good names that you can use: explorer.exe, iexplore.exe, firefox.exe, userinit.exe

Fix 2: Change Malwarebytes Anti-malware or another security program installation file extension.
Turn on �show file extensions for known file types� by doing:

   * Double-click on the My Computer icon.
   * Select the Tools menu and click Folder Options.
   * After the new window appears select the View tab.
   * Put a checkmark in the checkbox labeled Display the contents of system folders.
   * Remove the checkmark from the checkbox labeled Hide file extensions for known file types.
   * Press the Apply button and then the OK button.
   * Now your computer is configured to show file extensions for known file types.

Right-click on an installation file (mbam-setup.exe for Malwarebytes Anti-malware) and replace .exe extension with .bat, .com, .pif, or .scr. Press Enter and then double-click on it to run.

Malwarebytes Anti-malware or any of your security programs won`t run

Fix 1: Rename the main executable file.

   * Click Run, type %ProgramFiles% and press Enter.
   * Open a home folder of your security program, right-click on the main executable file and click Rename.
   * Type a new name (try explorer.exe, iexplore.exe, userinit.exe or any random name like 1j2j3kkk.exe) and press Enter.
   * Double-click on this file to run.

An example for Malwarebytes Anti-malware. Click Start, type in Search field %ProgramFiles% (if you using Windows 2000/XP, Click Start, Run, then type in Open field). Press Enter. Open Malwarebytes� Anti-Malware folder. Right-click on the mbam.exe file, select Rename, type myapp.exe and press Enter and then double-click on it to run.

Fix 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-malware or your security program.

Fix 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-malware or your security program.

Fix 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 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�.

Download this file
Save it next to mbam.exe (this file is located in the Malwarebytes Anti-malware home folder). Once done, drag and drop mbam.exe into Inherit.exe. Click OK and attempt to run Malwarebytes Anti-malware once again.

Malwarebytes Anti-malware won`t update

Fix 1: Manually download and install Malwarebytes Anti-malware update.

   * Download Malwarebytes Anti-malware updates from here and save it to your desktop.
   * Double-click on mbam-rules.exe to install.

Fix 2: Copy the Malwarebytes Anti-malware definitions (rules.ref) from a clean computer.

You can update through MBAM�s interface from a clean computer, copy the definitions (rules.ref) located in C:\Documents and Settings\All Users\Application Data\Malwarebytes\Malwarebytes� Anti-Malware (Windows XP and 2000) or C:\ProgramData\Malwarebytes\Malwarebytes� Anti-Malware\rules.ref (Windows Vista and Windows 7) from that system to a usb stick or CD and then copy it to the infected machine.

Cannot use the Internet and download Malwarebytes Anti-malware or another security program

You will need access to another computer that has a connection.

From the computer download and save a setup package (installation file) to a flash, usb, jump drive or CD. Now transfer it to the infected machine, then install and run the program.
If you cannot transfer to or install on the infected machine, try running the setup package (installation file) directly from the flash drive or CD by double-clicking on the file so it will install on the hard drive.