RE: OWA not working in SBS 2008
I am not sure but i think your Exchange might have got corrupted after update. I will like to inform you that latest Exchange Server 2007 Service Pack 1 update has been rolled up. So in that case just cross check and see if it has been applied in your case or not. If not then you can try installing it, if yes then you can try uninstalling and reinstalling it. Just make sure that you are installing latest release update Rollup 4 for Exchange Server 2007 Service Pack 1. Also make sure that your CAS servers is updated before installing update for Exchange Server 2007 Service Pack.
RE: OWA not working in SBS 2008
Give this a try and let me know if it helps:
On your SBS08 server, open IE window and try logging in to owa if you get the same error then try accessing OWA from the other client computer for verifying the issue. In case you don't have any issue in accessing owa from other client computer, then you can reset Internet Explorer (IE) & register files for IE 7.0 on your server. For that you can refer to below steps:
- Click Start, type "inetcpl.cpl" without quotes in search bar and hit Enter.
- Once you get the Internet options window, click on Advanced tab, click on Reset Internet Explorer Settings button and click on reset to confirm the operation.
- When resetting process gets completed uncheck "Enable third-party browser extensions" option, click Apply and click on OK.
RE: OWA not working in SBS 2008
I will suggest you to download and install SBS 2008 BPA tool for performing complete detection of the SBS 2008 domain.
You can refer to below articles as well.
Introducing the Windows Small Business Server 2008 Best Practices Analyzer
Best of luck.