Upgrading from 3.70 to the latest NOP version

It's the directory on my machine to which I have team foundation server mapped.  At the end of the day forget the team foundation server portion.  Originally I unzipped the source code to C:\Documents\NopUpgrade\nopCommerce_4.60.2_Source.

Opened the solution and ran the code without any issues.

I then took that same source code zip file and moved it to c:\productioncode\ and unzipped it.  When I try to open the solution in the newly created directory all of the projects in the solution fail to load.  Each with a .csproj error "The SDK 'Microsoft.NET.Sdk' specified could not be found.  

Yet, if I go back to the solution in the original directory the solution loads and runs fine.  

I can't figure out what nop is doing that would cause every project not to load when the source code is moved to a different directory.

[email protected] wrote:
It is Visual Studio issue not nop and if the files are locked or inaccessible then you will get this sort of issue also various other problems
See https://www.google.com/search?q=%22The+SDK+%27Microsoft.NET.Sdk%27+specified+could+not+be+found

Copy and paste the directory  C:\Documents\NopUpgrade\nopCommerce_4.60.2_Source to C:\Documents\NopUpgrade\nopCommerce_4.60.2_Source_test and see if you still have the error

I get the same error.  The only place I can load the solution is in the original directory that I extracted and ran the solution.

Figured it out.  Thanks for all of your help.