Unable to install Malwarebytes

[Titans]

Hello Kevin,

I had a few spare minutes & tried it but no was met by the same error message. I can try again later when I have more time.

Is it safe to assume that a malware is the cause behind this?

Thanks,

Titans

[kevinf80]

Hiya Titans,

Your system is clear of malware/infection, I can only think something is wrong with the installer service associated with windows. Have to go out for an hour, when back i`ll go back over your logs and check if i`ve missed something...

I did believe it would have installed in safe mode after we manually installed and started the associated services..

Cheers,

Kevin...

[Titans]

Hey Kevin,

I will try again you're last set of instructions & hopefully it works. But yes, please do double check the logs & let me know if anything's amiss.

I was wondering, could I maybe download it on to a flash drive & scan the computer using that? Sorry my knowledge is limited & I'm just grasping for straws.

Thanks for everything so far,

Titans

[Titans]

Hello Kevin,

So I did try it again & same outcome. Were you able to find anything from the logs?

If not, do you think it's possible to run this off a flash drive?  If its possible, how do I go about doing it?

Thank you,

Titans

[kevinf80]

Hiya Titans,

Malwarebytes will not run from a Flash drive, you can transfer the install from a Flash drive to sick PC only.. I believe MB will not install due to some registry or user account corruption.

I want you to run the windows "Program will not install/uninstall" troubleshooter, see if that makes any improvement..

https://support.microsoft.com/en-gb/help/17588/windows-fix-problems-that-block-programs-being-installed-or-removed

Does that make any difference?

Thank you,

Kevin...

Edited December 18, 2020 by kevinf80
typing error..

[Titans]

Hello Kevin,

The troubleshooter did not have malwarebytes on its list of programs, so there was no fix.

Thanks,

Titans

[kevinf80]

Hiya Titans,

When the program is "Not Listed" you should be offered to actually use that Not Listed entry from the top of the list of installed programs..

Thanks,

Kevin..

[Titans]

Hey Kevin,

Yes I tried that option, it just led me to an option to search online for troubleshoot options.

Thanks,

Titans

[kevinf80]

Hiya Titan...

At the prompt type or copy paste net user administrator /active:yes select enter. Close out and reboot, you will see a new account "Administartor" select it and follow the prompts through. When that account is set see if you can d/l and install Malwarebytes,,,, net user administrator /active:no exit Then reboot. That cmd activates the hidden admin account which you can see and use at boot. See if the install works now.. Turn it off when done by changing yes to no and run in cmd again...   Thanks,   Kevin

[Titans]

Heya Kevin,

So I opened up an elevated command prompt & attempted to paste net user administrator /active:yes

I got this error message, 'System error 5 has occurred. Access is denied.'

I am currently logged on the admin account for this PC, NOT the hidden admin account.

Thank you,

Titans

[kevinf80]

System error 5 error means command window was opened without Administer privileges. When opening cmd from an account with admin privileges does not mean cmd is open with same privileges... It has to be requested.

https://www.howtogeek.com/194041/how-to-open-the-command-prompt-as-administrator-in-windows-8.1/

I am not sure if your account is running correctly, hence the issues trying to install Malwarebytes..

 

Edited December 18, 2020 by kevinf80
typing error

[Titans]

Hey Kevin,

I was able to access the hidden admin account, but still no luck installing this

[kevinf80]

Hiya Titans,

Can you see if the following will install:

https://www.zemana.com/Download/AntiMalware/Setup/Free/Zemana.AntiMalware.Setup.exe

Thanks,

Kevin..

[Titans]

Hey Kevin,

Yes I was able to install that.

Thanks,

Titan

[Titans]

Hey Kevin,

Since I could not install Malwarebytes, do you want me to use zemana?

I have access to a premium account with Malwarebytes, which is why I've been hoping to get this up & running.

Thanks,

Titans

[kevinf80]

Hiya Titans,

No you can uninstall Zemana or keep it if you want, I justed want to see if windows installer was working correctly... As Zemana has installed correctly it rules out the OS system and user accounts as possible reasons...

I want you to check untrusted certificates, see if there is one listed for Malwarebytes and any other security programs:   Select Windows key and R key together. In the Run dialog box, in the Open box, type MMC, and then click OK. The Microsoft Management Console (MMC) appears. In the MMC, on the Console menu, click File then Add/Remove Snap-in, and then click Add. In the Add or Remove Snap-in dialog box, click Certificates, and then click Add. In the Certificates snap-in dialog box, click My User Account, and then click Finish. click OK on Add or Remove Snap ins. Expand the Certificates Current User node by double click Expand UnTrusted Certification by double click Double Click Certificates. The details pane appears, showing all of the root CA certificates that are currently untrusted. Is there an untrusted Certificate for Malwarebytes...? Or any other security programs, post a screen shot if possible. Thanks, Kevin..

[Titans]

Hey Kevin,

Please see below screen shots

Thanks,

Titans

 

[kevinf80]

Hiya Titans,

Thanks for that information, another possible reason discounted. Continue:

Open an elevated command prompt, at the prompt type or copy paste: gpresult /Scope User /v then hit enter. Allow that command to complete...

From the command window select > C:\ from top left corner of command prompt window.



Then select > Edit then Select All that will highlight all script in the cmd window



Then select > C:\ again from top left hand corner



Then select Edit then Copy



That will save a list of group policies to the clipboard.

Open Notepad > right click into the text area and select Paste

That will copy group policy list to Notepad, name it GPlist and save to your desktop or a folder of your choice, attach to your next reply...

Thanks,

Kevin..

[Titans]

Hey Kevin,

Please see attached.

Thank you,

Titans

GPlist.txt

[Titans]

I came across an old version  of malwarebytes (v3.0.6.1469), I thought of installing that & maybe it would automatically update to the newer version.

Instead I got this error.

I hope this might help solving this issue.

Thanks,

Titans

[kevinf80]

Hiya Titans,

I believe the only way forward is to upgrade your system from W8.1 to W10. A free upgrade is still available, have a read at the following link...

https://www.bleepingcomputer.com/news/microsoft/you-can-still-upgrade-to-windows-10-for-free-heres-how/

Let me know your thoughts..

Cheers,

Kevin.

[kevinf80]

Hiya Titans,

I could not see anything specific blocking the Malwarebytes Installation, if you prefer keeping 8.1 maybe you could try refreshing the system, then try Malwarebytes again...

Refresh basically reinstalls windows and any software that came with your PC or you downlaoded from the Windows Store. 3rd party software will not be saved. Personal stuff such as files, music, pictures, videos etc will be saved...

https://support.microsoft.com/en-us/windows/how-to-refresh-reset-or-restore-your-pc-51391d9a-eb0a-84a7-69e4-c2c1fbceb8dd

Cheers,

Kevin...

[kevinf80]

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