When I open Visual Studio, the Package Manager Console has red text:
The following error occurred while loading the extended type data file: Microsoft.PowerShell.Core, C:\WINDOWS\SysWOW64\WindowsPowerShell\v1.0\types.ps1xml(3007) : Error in type "System.Security.AccessControl.ObjectSecurity": Exception: The getter method should be public, non void, static, and have one parameter of type PSObject.
*Repeats 4 more times *
The term 'Get-ExecutionPolicy' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
This happened after applying VS 2015 Update 2 and some Windows 10 updates. My PowerShell at the path above is version 5; in my Windows features I also have version 2.0 installed.