Hi,
To narrow down this issue, please verify the following things:
1. Can you successfully connect to the SQL Server instance from SQL Server management studio?
2. Can you connect to the SQL instance via Visual Studio Server explorer on another machine or using a different account logged onto your machine?
Per my experience, it may caused because unexpected profile or setting damage. So try the following command in Visual Studio Command Prompt(run as administrator on vista or later OS)
devenv /ResetSkipPkgs
devenv /ResetSettings
And start visual studo in safemode by running command devenv /safemode
Please let me know the result.
Regards,
Alan Yao [MSFT]
MSDN Community Support | Feedback to us
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