I am having trouble logging in. Milestone is running, but I just can't connect. How do I fix this?

First, we recommend that you ensure you're connecting to the proper server address associated with the correct machine in the XProtect client. 

Second, Make sure that the BoringLabService AppPool is started in the IIS Manager

To do this:

• Search “IIS manager” in windows, then select Internet Information Services
• Navigate to Application Pools
• Make sure that BoringLabService is Started. If it isn't started, then click start.
• If it is started, try recycling the App Pool. 

Below is a screenshot of IIS Manager Application Pools