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MWB on D drive on WinXP64

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I have Windows XP64 installed on a separate physical drive in my Lenovo T520 along with Win 7 Pro on the C: drive in a dual-boot configuration.

I am trying to install Malwarebytes on the XP OS for at least some virus and malware protection.

The .exe is in the Downloads folder, but when called up I get a "Runtime Error (at 83:120): Could not call proc."

Malwarebytes has a work-around for this, but apparently doesn't work for XP64.

The procedure is to open an Admin command prompt and type in:

set TEMP=C:\Windows\temp

set TMP=C:\Windows\tmp

cd "%USERPROFILE%\Downloads"

I changed the drive letter to D obviously, but I receive a message that the "file path cannot be found" upon entry of the third line of the command line instructions.

Malwarebytes needs a %temp% folder for the installation, but after a search, this folder does not exist. There is a TEMP folder in Windows, but this isn't apparently where the system checks for this folder.

I have started in the correct directory and the command line looks like this before starting the instructions:


Is this a simple matter of creating this temp folder in the correct location and trying again? If so, where do I create it, and is it named just "temp" or does it use the % symbol in front of and behind the name. I am not a command line-DOS guru and have not used this much. Especially since Win98.

I'd appreciate any direction or help with this.

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Unable to start.

Unable to connect the service.


A small box pops up when I try to start MWB with the above message. It did however install this time to the D: drive using either of those links for the .exe. Now though, it just won't start.


Thank you for your fast help though. I didn't expect such a quick reply to my problem.

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Thanks for the reply.  I guess I'll try something else. Might be a challenge to find anything for XP Pro64 any  more.

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14 minutes ago, Firefox said:

If I am not mistaken, it is NOT supported on XP 64 bit

Oooooooooops !  doh.gif.fb1376439a6e1af46127e2a33328e603.gif

There 'ya go 

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Unfortunately it's true that Malwarebytes isn't supported on XP x64, and while much older versions were known to at least partially work with the OS, I believe they were all pre-3.x builds and with all of the changes to the code in the 3.x product line chances are high that it either won't work at all or will have major compatibility problems.  If it were me and I absolutely had to use XP x64 and had to use it to access the web I'd likely install a HOSTS file using a tool such as HostsMan to help block malicious sites, install an up to date browser such as one of those based on Chromium like SRWare Iron or Vivaldi or Mozilla Firefox (though a portable version of one of said browsers might be necessary for compatibility and easier to work with on the OS) and install some good filtering extensions like Malwarebytes Browser Guard, uBlock Origin, Privacy Badger, Ghostery, HTTPS Everywhere etc. and try to install a third party firewall solution such as one of those listed below (I don't know what the status of any of these are with regards to XP compatibility, especially x64, but there may be one or more with a compatible build available; in particular I did find references to Sphinx Software's Windows 10 Firewall Control being compatible with XP on their forums, though they didn't mention the x64 version so it's not guaranteed to work):

Finding any sort of virus/malware protection is going to be difficult as most if not all vendors have long since abandoned XP support and very few supported XP x64 to begin with as it was a perpetual beta/experimental OS that Microsoft did not promote very much and wasn't available on many OEM systems without special request.  If you can at all get by without using it I'd definitely recommend that as there are very few applications that support it these days.

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Thank you for that detailed explanation.


I knew it wasn't very popular back when it was released and there were not many compatible 64 bit programs at that time. It's too bad too for later computers whose chipset and processor could support more than 3GB of RAM.

XP64 is amazing on a quad-core system with 16GB of RAM. Just not too safe on the 'outside' world.


Thanks for all of your help folks. I'll will continue using MWB on my other Win7 and 10 systems.

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Another thing, if you haven't done so already, I'd highly recommend disabling/removing everything on your network connections except IPv4 (required for internet access) including all the remote access, SMB, file and printer sharing etc. because those are frequent targets for exploits and obviously that OS isn't being patched any more:


You should also disable the remote access and internet sharing services etc. in services.msc.  You'll find some great info on Black Viper's site.

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