HTTP Error 503 in CasaTunes web interface

Problem

When opening CasaTunes Setup or CasaTunes, this error message is displayed.

Solution

These steps must be done ON THE CASATUNES SERVER, not on another computer on the same network. If you need help accessing your server directly, please contact CasaTunes Technical Support at 888-855-2272 ext. 2 or [e-mail].

1. Stop IIS (in ADMIN command line iisreset /stop)
2. Delete folder C:\inetpub\temp\apppools
3. Start IIS - iisreset /start