If a Restart does not help, use Process Explorer to resolve The process cannot access the file because it is being used by another process error.

I skimmed the surface with a couple blog postings in 2008 (Using Process Explorer to tame svchost.exe and Process Explorer, Part 2) and won’t attempt to sell you on the software here.

Process Explorer, part of the Sysinternals Suite, is a powerful alternative to Windows Task Manager. It provides detailed system monitoring, advanced troubleshooting tools, and deeper insights ...