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Can't install Malwarebytes


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Hello,

Ran into a weird issue; I can't install Malwarebytes. Not very sure if I'm infected, but the glitches allude to it. I tried installing it on default path; get a popup that says "Invalid Path". If I switch to a different path, it installs, asks me to restart, and then restarts twice (back to back), and then says "the installation couldn't be completed".

I tried delaying the restart and checking what files get installed, and I only see 3 files;

MBAMInstallerService.exe (that only pops up a brief CMD window that then goes away)

mbemsg.exe (that pops up a warning window that says "An error has occured and Malwarebytes will not install on your computer")

mbuns.exe (that asks me if I want to remove all Malwarebytes files, and then says "Uninstall failed" if I click yes.)

I tried rebooting in Safe Mode with Networking and doing the same steps, no result on that front either, same issues. Aside from these unusual tics I haven't noticed any signs of a virus, but I'd still prefer to get it out of my PC. I have Windows Defender installed and updated, the scans are inconclusive and don't show any issues. 

Thanks in advance.

Addition.txt FRST.txt

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  • Root Admin

Okay, please run the following and post back the log once completed. It may take up to an hour to run so be patient as it cleans up and checks things.

 

Please download the attached fixlist.txt file and save it to the Desktop or location where you ran FRST from.
NOTE. It's important that both files, FRST or FRST64, and fixlist.txt are in the same location or the fix will not work.

Please make sure you disable any real time antivirus or security software before running this script. Once completed make sure you re-enable it.

NOTICE: This script was written specifically for this user, for use on this particular machine. Running this on another machine may cause damage to your operating system that cannot be undone.

Run FRST or FRST64 and press the Fix button just once and wait.
If the tool needs a restart please make sure you let the system restart normally and let the tool complete its run after restart.
The tool will make a log on the Desktop (Fixlog.txt) or wherever you ran FRST from. Please attach or post it to your next reply.

Note: If the tool warned you about an outdated version please download and run the updated version.

NOTE-1:  This fix will run a scan to check that all Microsoft operating system files are valid and not corrupt and attempt to correct any invalid files. It will also run a disk check on the restart to ensure disk integrity. Depending on the speed of your computer this fix may take 30 minutes or more.

NOTE-2: As part of this fix all temporary files will be removed. If you have any open web pages that have not been bookmarked please make sure you bookmark them now as all open applications will be automatically closed. Also, make sure you know the passwords for all websites as cookies will also be removed. The use of an external password manager is highly recommended instead of using your browser to store passwords.

The following directories are emptied:

  • Windows Temp
  • Users Temp folders
  • Edge, IE, FF, Chrome and Opera caches, HTML5 storages, Cookies and History
  • Recently opened files cache
  • Flash Player cache
  • Java cache
  • Steam HTML cache
  • Explorer thumbnail and icon cache
  • BITS transfer queue (qmgr*.dat files)
  • Recycle Bin

Important: items are permanently deleted. They are not moved to quarantine. If you have any questions or concerns please ask before running this fix.

The system will be rebooted after the fix has run.

fixlist.txt

Thanks

 

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Hey Advanced, 

Thanks for the quick response! I tried running the FRST app with the fixlist as you recommended, attaching the log of what occured. I got the same error after restarting, about how the Malwarebytes installation couldn't be completed. However, I tried reinstalling the MBSetup.exe installer I had (in the root directory of C:/Program Files/Malwarebytes/Anti-Malware) and it worked without a hitch! Running a scan right now; everything's working properly, quarantining the detections is working fine. Thanks for the help! 

Fixlog.txt

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  • 4 weeks later...
  • Root Admin

Due to the lack of feedback, this topic is closed to prevent others from posting here.

If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this topic with your request.

This applies only to the originator of this topic. Other members who need assistance please start your own topic in a new thread.

Tips to help protect from infection

Thanks

 

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