Hi
We are experiencing a strange issue with OWA authentication and its happening with new users only including me. We are a small organization with approx. 70 users. Issue is with new user accounts only.
Access to OWA stops working from any machine for the new users also they get authentication error on their phones. I have checked permissions on Virtual Directory on exchange server, all seems to be in place. I have checked event viewer but it doesn't have any event for auth. failure.
IIS logs have the following Message,
2014-02-05 09:37:28 W3SVC1 (EXCHANGE SERVER IP) GET /owa/ - 443 myusername 77.88.97.134 Mozilla/5.0+(Windows+NT+6.3;+WOW64;+Trident/7.0;+rv:11.0)+like+Gecko 401 1 1326
Server details
Server 2003 Ent. x64 R2
Exchange Server 2007 Version: 08.03.0342.000
IIS 6.0
Rebooting the exchange server resolves the issue sometime for 2 days sometime for 3-4 weeks.
Please advise.
Best Regards
Prabhash