PTC is in the process of updating firstrobotics.ptc.com/Windchill to Windchill 10.2. As part of the process, we need to take the active server offline until the hardware configuration and data migration is complete. The server is moving from Europe to the US and getting a substantial upgrade. The new server should be much easier to use, much more reliable and fully support Windows 8.1
If you have critical files you need access to, PM me and I'll see what I can do to help you out.