# Windows Update no Longer Works Since Installing SP1 Update

service-packwindows 7windows update

Yesterday I realised that Windows Update wasn't working on my Windows 7 (32-bit) laptop.

It sometimes found updates but then when I selected them and tried to download them it just hung on 0 kb and 0%.

I uninstalled SP1 and Windows Update worked fine. Then , when reinstalled SP1 Windows Update stopped working – it just hangs while it says its looking for updates.

I have used two tools to try to fix it – Windows Update Diagnostic and Microsoft FixIt 50202. Neither have worked…

#### Best Answer

I've dealt with lots of servers and clients that had problems with Windows Update.

Make sure your running the newest version of Windows Update Agent (this has solved many problems for me). The newest version can be found here: https://support.microsoft.com/en-us/kb/949104 Find your OS, download the package and install it. Then reboot.

If that doesn't resolve it, try this:

1. Stop the Windows Update service
2. Delete contents of C:\Windows\SoftwareDistribution folder
3. Start the Service
4. Try Installing updates.

In some rare cases it's even harder to resolve the issue. I'd recommend you try running the following lines in Command Prompt as Admin (To open Command Prompt as Administrator, search for CMD > Right-click > Run as Administrator)

net stop cryptsvc
md %systemroot%\system32\catroot2.old
xcopy %systemroot%\system32\catroot2 %systemroot%\system32\catroot2.old /s