SCCM clients stuck on 0% downloading applications
If you have a client that is not downloading its required files in the Software Center (having requested from the software catalog and is seemingly stuck on 0%) then it could be an issue with the local DP server.
To fix this, login to the local server and go into IIS Manager. You should then browse to the Application Pools and find the “SMS Distribution Points Pool”, if it is stopped, right click on the pool and click Start.
After doing this, you should find that the clients on the local site will now be able to download from the point distribution server.