Visual Studio – Error when clicking on Solution -> Properties (Object reference not set to an instance of an object)

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Some extensions may cause this.
Try disabling extensions and restarting Visual Studio.

Quite often error will be gone even if you re-enable extensions after this.

There’s a bug report on Microsoft Connect (link).
It is marked there as “Closed as External”, but it seems that it may occur randomly with any extension, so would be worth voting it there to bring it to Microsofts attention.

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