Unable to install Windows Defender

Question

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!

Mary G · Answer

Check the requirements here.

silverkiller · Answer

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

Windows General

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