Well you have been trying to sync active sync and it is failing. You have check that you can access http://server/oma and found that you can logon. You may have also turn on Verbose login on your Activesync client and notice an error of HTTP/1.1 404
Well before you try and create create the Virtual Directory or remove form based authentication from the OMA page please do the following.
Check all ActiveSync Virtual Directory have been created.
To do this.
- open IIS
- Expand the –