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Manual definitions install doesn't work.

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What is wrong with this:

I install the very latest MBAM on July 11th on my drive F: on my main computer.

It works fine.

On another machine, 2 weeks later, I download the "manual, definitions update" and put it on CD.

The definitions install fine back on my main computer.

I run MBAM but it still says my definitions are from July 11th.

I notice the definitions do NOT ask "install where" (like it should).... but it just put them

on C:

Developers, *PLEASE* let people install software where they want. *ALWAYS* ask them. ALWAYS

make the default "exactly where my original install was". Nobody's C: drive has infinite space.

MBAM does *NONE* of that correctly.

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Hello, and welcome to Malwarebytes, NoVirusGirl:

Sorry to hear that you are having trouble transferring the definitions file to your (infected?) computer.

Until an expert stops by, just a couple of notes:

1) When you transfer the definitions file (rules.ref), I am pretty sure that you will not see the "correct" database number reflected in the MBAM GUI when you run it, even though it *is* using the current, transferred file. I think it won't update in the GUI until you are able to update from within the program. :) (Someone more expert will correct me, if I am wrong about this.)

2) I'll leave it to the experts about the default installation destination & file path... ;)

3) It seems from your description that you are trying to get MBAM to run on an infected machine? If so, please read the following for assistance starting the cleaning process.

Excellent, self-help troubleshooting info for getting MBAM to run on an infected machine can be found here.

And there are specific, self-help malware removal instructions here.

If you would like expert assistance with cleaning your system, there are 3 support options from which to choose:

  • Option 1 -- Free, Expert advice in the Malware Removal Forum
  • Option 2 -- Paying customer using MBAM PRO -- Contact MBAM Support via email
  • Option 3 -- Premium, Fee-Based Support


As we don't deal with malware removal in this Comments and Suggestions board of Anti-Malware Forum, you'll need to please start a topic in the Malware Removal forum so that a qualified helper can help you fix any malware related problems/infections you may have.

  • First, please print out, read and follow the directions here, skipping any steps you are unable to complete.
  • If the infection has so crippled the computer that you cannot follow most/all of the requested steps, then please just proceed as advised below:
  • Then please post a NEW topic here.
  • When posting your new thread, please make sure that, under "options", you select Track this topic and choose Immediate Email Notification, so that you're alerted when someone has replied to your post.
  • One of the expert helpers there will give you free, one-on-one assistance when one becomes available.
  • Please refrain from making any further changes to your computer such as (Install/Uninstall programs, use special fix tools, delete files, edit the registry, etc...) unless advised by a malware removal helper. Doing so can result in system changes which may hinder the attempts by a helper to clean your machine.

IMPORTANT NOTE: Please DO NOT post back to ("bump") your topic within the first 48 hours.

Replying to your own posts changes the post count from zero. Helpers are looking for topics with zero replies. If you reply to your own post, helpers may think that you're already being helped and thus may overlook your post. This will only delay your obtaining assistance.

  • o If there is no reply from any experts after 48 hours, you can reply to the topic, asking for help again.
    o You may send a Private Message to a Moderator asking for assistance.


Alternatively, as a paying customer using MBAM PRO, you can contact the help desk at support@malwarebytes.org or here.


If you would like to use the Malwarebytes Premium Services (Comprehensive solutions to all your computer support needs -- from installation and set-up to troubleshooting and tune-ups), please go to the Malwarebytes Premium Services support site.

Please be patient -- someone will assist you as soon as it is possible.

Thanks very much!


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I run MBAM but it still says my definitions are from July 11th.

That is because manually updating the rules.ref file (including using mbam-rules.exe) does not update the metadata that MBAM reads to display the date of the rules file, however, MBAM will still be using the newer rules.ref file that you installed for scans.

I notice the definitions do NOT ask "install where" (like it should).... but it just put them

on C:

Any other program would do this as well. It does not matter where you install the program, any data files will still be stored in the normal program data locations, which if Windows has them mapped to your C: drive, then that's where they need to be (the locations are C:\Documents and Settings\User Name\Application data and C:\Documents and Settings\All Users\Application Data Note: On Vista/7 it will be C:\Users\User Name\AppData\Roaming and C:\ProgramData.

If you inspect those locations, I'm certain you'll find data from many other programs there, not just Malwarebytes' Anti-Malware.

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