We have an SBS 2008 server that has been running fine. Tonight, after no changes were made on the server or to client PCs (and after work hours) suddenly there is no access to desktop PCs via Remote Web Workplace.
using Internet Explorer works fine from outside the LAN to connect to RWW.
Users can log-on with their credentials, and authentication works fine. They get into RWW.
Once in Remote Web Workplace they can chose to "Check E-Mail" and the OWA opens fine and authentication is good. They can work normally in the OWA.
We are not using SharePoint - never have on this server, so the SP site is disabled.
If they select to "Connect to a Computer" there is an immediate failure and they receive the messages box "Cannot connect to the Remote Web Workplace site. To continue, contact your network administrator. "
This happens when logged on as the Admin as well, when trying to RDP into the server via RWW.
All PCs are verified up and running, and can be accessed by VNC and TeamViewer.
I see nothing in the event viewer that points to what is going on during the failed attempts.
This was working fine until about 8pm this evening and is used vigorously throughout the day and early evening. There were no issues reported until the failures begun.
**We are using a 3rd party SSL Cert that is installed and up to date.
Among other things, we have tried the following:
Rebooting the server does not help.
Re-registering the IIS Assembly IISConfigLib.dll and then IISReset has not helped at all.
Even the SBS "Fix my network" as a last resort did nothing to resolve.
An audit of the firewall (SonicWall TZ210) shows it is fine w/ no changes.
Anyone have a suggestion?