Thanks marcmlynarczyk but this doesn't solve the problem.
luca.davi
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Thanks Chris. This sometimes solves the problem. The problem randomly cames out again..... I'm having a lot of problem after updating to Catalina.. It looks Windows Vista......
The company I'm working for has locked some apple service from firewall. I think this is the problem. I don't know which is the service that cause this problem but if you disconnect the Mac from any network everything should work.I think that Xcode call some apple service for verifing something (or for saving some usage data 👿) and the call to that service go in timeout