When attempting to expand IIS for maintenance or to restart, you may get the following message:
"The path specified cannot be used at this time"
A work around solution to correct this is to end the OWSTIMER process in task manager:
While a better workaround might be considered in production, this seems to work in a pinch, and is a quick solution in a demo environment. I found this at another site when dealing with this issue initially:
blogs.pointbridge.com/Blogs/pagnusat_tony/Pages/Post.aspx