I keep having issues with windows update, usually if I dare to change any of the default settings on a windows machine. I can fix them but can never remember how I did it last time. The sooner this fills up, the more you'll know I've been using windows...

Open up a command line with cmd.exe and get typing with tese commands, or put them in a batch file like wu-fix.cmd

net stop wuauserv
regsvr32 /s wuapi.dll
regsvr32 /s wuaueng1.dll
regsvr32 /s wuauserv.dll
regsvr32 /s wuaueng.dll
regsvr32 /s wucltui.dll
regsvr32 /s wups.dll
regsvr32 /s wuweb.dll
regsvr32 /s wups2.dll
regsvr32 /s iuengine.dll
regsvr32 /s cdm.dll
regsvr32 /s msxml2r.dll
regsvr32 /s msxml3r.dll
regsvr32 /s msxml.dll
regsvr32 /s msxml3.dll
regsvr32 /s msxmlr.dll
regsvr32 /s msxml2.dll
regsvr32 /s qmgr.dll
regsvr32 /s softpub.dll
regsvr32 /s wintrust.dll 
regsvr32 /s initpki.dll
regsvr32 /s dssenh.dll 
regsvr32 /s rsaenh.dll 
regsvr32 /s gpkcsp.dll
regsvr32 /s sccbase.dll
regsvr32 /s slbcsp.dll 
regsvr32 /s cryptdlg.dll
regsvr32 /s qmgr.dll
regsvr32 /s qmgrprxy.dll
regsvr32 /s atl.dll
msiexec /unregister
msiexec /regserver
move %windir%\SoftwareDistribution %windir%\SoftwareDistritbution-old
proxycfg.exe -u
net start wuauserv