If you ever encounter this error delete all the related packages will resolve this.
I will further explain this using an example.
Suppose you get this error for Microsoft.Bcl.Build.Tasks.dll as shown below.
NuGet Package restore failed for project MyProject.Application: The process cannot access the file 'C:\MySolution\packages\Microsoft.Bcl.Build.1.0.21\build/Microsoft.Bcl.Build.Tasks.dll' because it is being used by another process..
This can be resolved by deleting all the Microsoft.Bcl.* folders in the packages under the solution.
Regards,
Samitha
I will further explain this using an example.
Suppose you get this error for Microsoft.Bcl.Build.Tasks.dll as shown below.
NuGet Package restore failed for project MyProject.Application: The process cannot access the file 'C:\MySolution\packages\Microsoft.Bcl.Build.1.0.21\build/Microsoft.Bcl.Build.Tasks.dll' because it is being used by another process..
This can be resolved by deleting all the Microsoft.Bcl.* folders in the packages under the solution.
Regards,
Samitha