Windows Update Slowness
We’ve heard a number of people report that Win7, when freshly installed, take a long time and a lot of memory to apply the first round of updates. The ‘check for updates’ part of the sequence taking more than 30 minutes … in some cases several days!
This is due to a bug* in Windows Update (WU), which causes the processing (“checking” or “searching”) stage to take far too long, when there are a great many updates to process. The bug is resolved with the new WU client delivered in the KB3172605 update. However, the bug still applies while you are installing KB3172605, making it take a long time … unless you use this procedure.
The procedure below is the result of a lot of experimentation. It is the speediest way we have yet found, for getting Windows fully updated.
A trick we have learned:
In my own tests, using this method, I was able to take a Win7 SP1 Ultimate (64bit) system from fresh installed to fully updated in about 1.5 hours. The WuRedir directory (which I remove in step 2) will be rebuilt by Windows along the way, and the WU service will be restarted on its own.
For other WU issues, start with this omnibus troubleshooting article.
We hope to add more to this article. Please send suggestions to mota.