Been going through a ton of old posts and this seems to be a problem several people have encountered. Could not find an answer in either posts or by going through troubleshooting steps from the codex though, so hope someone here can help.
I have a brand new wordpress installation on an IIS server, no plugins that could interfere. Everything is working as it should. When I try enabling custom permalinks, ie:
all pages display as they should, with permalinks working correctly. Except my homepage, which returns a "page not found".