03.06.08

The program can’t download definitions updates Error found: Code 0×80240022

Posted in Software, Windows Defender, Windows Vista at 6:51 am by RedFlameOut

My PC is running Windows Vista Ultimate 64-bit with NOD32 antivirus/anti-spyware and Windows Defender.

Windows Defender is not the best anti-spyware however it does have it’s place. NOD32 from ESET does a decent job on spyware and it is one of the best for antivirus so I was happy.

Part of my normal security procedures verifies everything is updating itself properly. Windows Defender had not updated in quite some time so I opened it and manually ran an update. I promptly got the following error:

Windows Defender screen shot showing update error
Arrgh say I!

After a little googling, I found a procedure that fixes the problem. Apparently the definitions have something wrong with them (corruption maybe?) that causes the update to fail.

Here is the procedure that worked for me:

  1. Type Windows-R (Hold the Windows or start key and type an R) to bring up the run dialog box.
  2. Type in cmd.exe and the press ctrl-alt-enter to run it as Administrator. It may ask for escalation privileges so type in your password and press enter if it does.
  3. Use the cd command to change to the Windows Defender directory:cd “\Program Files\Windows Defender”
  4. Run the following commands:mpcmdrun -RemoveDefinitions -All
    mpcmdrun -SignatureUpdate

That is it. It worked for me. Here is a screen shot of an example run of those commands once you have a command window open:

Screen shot of command window running Windows Defender commands

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