I've a mysterious issue that occasionally happens on Gearhost: the main tenant of a multi-tenant site is not reachable as only 404 (the default IIS error page) is returned.
Meanwhile tenants run and are reachable, but the main tenant is not. An AppPool recycle solves the issue and there are no traces of anything unusual in the logs. Gearhost can't give any further info at the moment.
Has anyone experienced something remotely similar? I'm very puzzled.