[SharePoint deployment] WSP deployment stuck at Deploying

Problem

In central administratioon WSP package deployment stuck on “Planned on "specific date”

Resolution

1. Make sure SharePoint Timer service is running on every web front server (access it though service.msc)
2. Check that every web frontal servers reply to ping (ping from each server)
3. Make sure no web.config file is opened
4. Start everyapplication pool

If that doesn't help :

1. Go in central administration : Delete every jobs that are trying to deploy wsp (in jobs status)