0x800F0805 SP1 installation

Error : 0x800F0805 SP1 installation
by Deepak » Sun Jan 20, 2013 6:08 pm

Sign & Symptom

An internal error occurred while installing SP Error : 0x800F0805

Fix Steps

> Just disable the AV and the firewall to the fullest extent they allow. 
> Disconnect the computer from the internet beforehand, though. 
> If your computer connects wireless, use the wireless utility to turn off the radio. 
> If you connect through Ethernet, just unplug the cable.

Reference:

http://windowssecrets.com/forums/showthread.php/136325-Unable-to-install-Windows-7-SP1