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Error code: 703 (0, 14) during install

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A screen shot is attached. This error comes up at the very end of the install, after clicking "OK" to start the update and to launch MBAM. If I close the error, then start MBAM from the desktop icon, it opens fine, I can update OK, and it seems to scan OK (I'm running a scan right now). So the error appears to have ill effects other than stopping the first update/launch at the end of the install.... any thoughts? I already used the mbam-clean tool as suggested in other threads, followed by a reboot, but it still pops the error....


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Error code 703 means: Error parsing the database.

Please download the utility from the following link, and it should reinstall the database so that you can update it through Malwarebytes' Anti-Malware:


It may also be necessary to reinstall Malwarebytes' Anti-Malware. To do so, please uninstall Malwarebytes' Anti-Malware normally, restart your computer, run the utility at the following link, restart your computer again, and then reinstall Malwarebytes' Anti-Malware.


Please download a fresh copy from the following link for the reinstall if needed:


Also, please exclude Malwarebytes' Anti-Malware's Files and Folders From Other Active Security Programs.

For Windows XP:

  • C:\Program Files\Malwarebytes' Anti-Malware\mbam.exe
  • C:\Program Files\Malwarebytes' Anti-Malware\mbamgui.exe
  • C:\Program Files\Malwarebytes' Anti-Malware\mbamservice.exe
  • C:\Program Files\Malwarebytes' Anti-Malware\zlib.dll
  • C:\Program Files\Malwarebytes' Anti-Malware\mbam.dll
  • C:\Program Files\Malwarebytes' Anti-Malware\mbamext.dll
  • C:\Documents and Settings\All Users\Application Data\Malwarebytes\Malwarebytes' Anti-Malware\rules.ref
  • C:\Windows\System32\drivers\mbam.sys
  • C:\Windows\System32\drivers\mbamswissarmy.sys

Note: If using a software firewall besides the built in Windows Firewall you'll need to exclude them from it as well

The FAQ contains examples of setting file exclusions for some known AV products.

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Well, things have become a bit more interesting.... I cancelled the scan (it was more of a test to see how things were running after that error popped up; I'm 95% sure the PC is clean), then entered the registration codes and enabled active protection. As soon as I did this, Internet Explorer stopped working; the home page would open for maybe 2-3 seconds, then IE would close. I uninstalled MBAM, and IE now works fine.... I'll try the above steps tomorrow and report back. THANKS!

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If you require help with malware removal, please print out, read and follow the directions here, skipping any steps you are unable to complete. Then post a NEW topic here.

One of the expert helpers there will give you one-on-one assistance when one becomes available.

After posting your new post make sure under options that you select Track this topic and choose one of the Email options so that you're alerted when someone has replied to your post.

Alternatively, as a paying customer, you can contact the help desk at support@malwarebytes.org

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The PC is free of malware. I was only running a scan to test the functionality of MBAM to make sure it was stable after getting the error during the install. So- I am going to try the steps provided above in post #3 and will report back.... thanks again....

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  • Root Admin

Please try the following. Make sure you temporarily disable your Anti-Virus and when done re-enable it.

Please try this on the computer that is having an issue.

1. Uninstall Malwarebytes' Anti-Malware using Add/Remove programs in the control panel.

2. Restart your computer (very important).

3. Download and run this utility. mbam-clean.exe

4. It will ask to restart your computer (please allow it to).

5. After the computer restarts, install the latest version from here. mbam-setup.exe

Note: You will need to reactivate the program using the license you were sent

Launch the program and set the Protection and Registration. Then go to the UPDATE tab if not done during installation and check for updates.

Restart the computer again and verify that MBAM is in the task tray and that you can run a quick scan and all is working as expected.

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