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July 22nd, 2009 10:00

Unable to install Windows Defender

Attempted to install windows Defender on 4 Dell desktop PCs.

1 was reformatted with WinXP pro, windows defender installed fine.

the other 3 stopped during the installation stating I was not authorized to start the required service.

I tried this logged in as a user with adminstrator rights and as the local adminstrator on the workstation, still recieved the same error.

Tried microsoft tips found here : http://support.microsoft.com/?kbid=555175

still no help.

Any other ideas? Appreciate any help!

4 Operator

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20.1K Posts

July 22nd, 2009 10:00

Check the requirements here.

July 22nd, 2009 10:00

The 4 PCs are all the same model (unfortunatly I do not have the model number), the only difference being that one was re-formatted.

Either way, the other 3 still meet the requirements stated in the link, all with the latest updates

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