I'm getting this error: "The server encountered an error while retrieving metrics. Retry the operation." in the dashboard and no Usage overview stats displayed after I've installed and removed a squid proxy server inside an Azure Ubuntu 12.04 server VM.
Anyone know any way to restore them?
I don't think this is related to anything that you've done, I think that MS have having some issues with metrics as I'm getting the same message on instances that I haven't changed.
If it's important for you I would log an issue with MS support.