A few months back I bit the bullet and replaced the boot drive on my VISTA. VISTA logs showed many errors but my analysis concluded that it appeared the HD controller was hanging or operations were timing out. That led me to SMART error logs that showed excessive sector relocating in 1 of the partitions. I use Acronis to image my drives. So bought replacement HD, mounted and restored images (HD partitioned to 4) All appeared to work OK. All my APs worked. Peachy.
Then, after several weeks I opened Windows Update to do routing updates. (I'm still gun shy on installing patches on patch day. I'd prefer others find any errors)
I bring up Windows Update, click Check for Updates and I get an error window stating "Windows Update cannot currently check for updates, because the service is not running. You may need to restart your computer.
Google search finds others have seen this but most can simply edit Services and set it back to auto run. It's running on my VISTA. Background Intelligent Transfer Service is also running. Nothing else I found seemed to apply. Also found an IT guy who'd imaged 5 Win7 PCs and 4 w/n run WU. I'm not alone.
Swapping the original HD back confirmes that WU functions OK on that HD, so the issue is on the new HD. Since there's nothing wrong with the settings, and this error msg pops up immediately I know it's not from the MS site.
Also, Windows Defender fails on update with error code 0x8000247
Running Microsoft Windows Fix It shows issues found and offers to repair. Running repair results in "Fixed", but WU and Defender still fail to run updates. Same error msgs.
Have 32 bit Vista Ultimate, SP2. Can't help but wonder if this error is somehow tied to VISTA activation.