I have a mojoPortal site on Arvixe on a 64-bit Windows 2012 Server. It's running mojoPortal 18.104.22.168. After having bother with one of my custom components which talks to an MDB, I asked Arvixe support to enable 32-bit applications in the application pool. (This is something we cannot get at through the normal web interface so they have to do it.)
Each time they do this, they come back to me saying the site is working fine, but I find it is broken and giving HTTP 500 server internal error. They then acknowledge it is broken and set it back again.
I don't have a Server 2012 with a mojoPortal site to cross-check, but I do have Server 2008 R2 64-bit servers, and on those, enabling 32-bit applications in the application pool has no effect on mojoPortal - the site keeps working fine.
I can't help thinking the Arvixe guys are doing something strange, but before pushing this, can anyone confirm whether a mojoPortal 22.214.171.124 should be able to operate fine on Windows 2012 Server 64-bit with the application pool set to enable 32-bit applications?