I cannot install the following update, although i have retried for so many times:- Definition Update for Windows Defender - KB915597 (Definition 1.17.2520.1) I got the message:- Error found: 8050A001 Sometimes i get error code 80092003 too, instead of 8050A001. Can anyone help me with this?

Hi I also have the problem of not being able to install the update - KB915597 (Definition 1.17.2520.1). Although I get an error message of code 80070643. I have searched troubleshooting etc. and found some instructions to follow but with no luck. It still will not install. Does anyone know how to help us? Leah

Sir, I too have that problem. Later, I found a way to tackle this problem. Please do this to install that update, Disable any antivirus and antispyware softwares, Disable even your firewall and disable any software that controls systam activity and try to update it, Its get updated for me. All the best.

Excellent. Thank you! it installed just fine :-)

This worked excellently.Disactivating the Antivirus didn't yet help. Possibly this will not be necessaryDisactivating a Spy Doctor worked

Spyware Doctor is the problem. Just disable OnGuard fot 15 minutes, and it will install.

scan my computer because i can open my hard disks

Thanks. This worked for me as well.

Installed fine yesterday I checked and it was there. Today it's back asking to be installed again Help!!!!

-_-||| KB915597 MSN

Thank you very much for this posting. I, too, was having trouble installing this update. Although I wasn't getting any error message, it just would say downloaded and would try to install upon shutting down of my p.c. I tried every thing imaginable. Then I read this posting and did what you said, disabled my anti-virus program and firewall (and I turned off Windows Defender) and downloaded and installed it again, and this time it worked. I appreciate your help in this matter. I also changed the "Windows Update" option to download automatically, but let me pick a time to install. That way I can control which programs I want, or don't want. I hate IE and IE 7 is the worst, so I disabled that. IE 6 works just fine and without all the drama and error messages. Richard L Braun

fix it for me ok!!!