Got me. The only thing I know of that could cause problems like that is if you are using encrypted passwords and your machine key in web.config changed, users whose passwords were encrypted with the old machine key will not be able to login. But if that happened then new users should stil be able to register and login, however then if you fix it by restoring the old machine key then the new ones would no longer be able to login. Machine key is used to encryot passwords so its very important to set a custom machine key before changing to encrypted passwords and then never change it again, ie make sure you restore it to the new web.config file whenever you upgrade.

Possibly site 2 is using clear text passwords or hashed so it is not affected.

Wish I could be more help but that is all I have based on what you describe.

Best,

Joe

I think I understand the problem more, just not a solution.  When you try to login, it just forwards to the root.  Even if you type a wrong password, it doesn't stop and say "wrong password".  I somehow fixed it on the delfraisse.com website, but I have added a client (a friend) which the shared host picked a different windows server.  It will not login.  It does the behavior above. The control panel is hsphere and as far as I can tell, its running 4.0 asp.net.  I am running a test to get it working at http://jonathantest1.delfraisse.com/  The log file is empty, can you recommend some code I can put into it to track what might be casing it not to even have a bad password error?  My host hasn't figured it out and recommend I come to the mojoPortal community.

I really want to use mojoPortal for my new project, and I am going to get my client to buy the calendar add-on if I can get the login to work.