I am running 2.3.1 (tried to upgrade to 2.4 but had install issues, so reverted) and MSM. I switched my secondary site to cookies only, and can login without problems. however when i try to login to my main site the login just reverts me back to the login page without any errors.
When I try to log into my secondary site and switch over to my main site, nothing happens it just takes me back to the cp home of my secondary site.
On top of all of this is the reason that i was switching around my session type. I am getting frequently kicked out of my cp session as are other users and some times they have just spent a half an hour perfecting an entry. This is really frustrating and am wondering if someone could take a look for me?
Edit: I have found that I can type the main CP url in the address bar and get to it that way but i I have to login through the secondary site first and then do that. And I still cannot switch between sites the conventional way.
Since I was able to get to my main CP I switched back the session type to Sessions Only. This then allowed me to login to my main sites CP.