Be careful when using Microsoft's symbol servers - it requires some patience. If you do, well, it will take some time before you run any bigger project. You can read more about the concept here - https://docs.microsoft.com/pl-pl/azure/devops/artifacts/symbols/debug-with-symbols-visual-studio?view=vsts - like always, everything has its pros and cons. In practice, however, I definitely encourage my friends to disable this option. I've found some articles on running the projects endlessly. One was able to run after an hour of waiting until all symbols were fully loaded.