Thanks for replying. I am trying to open the project containing the packages . The other developer follows the exact same steps on the server and he is able to open packages from the project .These packages were developed in VS 2017 .
However, when I try to open it tries to open as VS 2015 and I receive :
"One or more projects in the solution were not loaded correctly. Please see the Output window for details"
C:\Users\User\Source\Workspaces\Workspace\SSIS\Internal\Integrations\Solution1\SSIS Prod\SSIS Prod\SSIS Prod.dtproj : error : Access to the path 'C:\Users\User\Source\Workspaces\Workspace\SSIS\Internal PMO\Integrations\SSIS\SSIS Prod\SSIS Prod\SSIS Prod.dtproj' is denied.