Though I do the majority of my work using single site WordPress installs, there are a number of sites and projects in which I’ve used WordPress multisite and there’s a problem that I’ve experienced specifically with using WordPress multisite, subdomains, and shared hosting environments.
Specifically, the problem is this:
- Install WordPress and activate multisite
- Configure the installation to use subdomains (versus subdirectories)
- Attempt to login and get stuck in a redirect loop
If you have a single instance of WordPress multisite installed on the same server, there’s no issue, but if you go beyond that then you normally hit a problem: a redirect loop.

