issue at the time of create or open project in visual studio 2015

https://stackoverflow.com/questions/13727454/what-is-this-vague-error-with-redirection-config-while-building-a-web-deploy-p

Right click on the icon of visual studio , it will show you all currently created projects , then move the pointer to your web api project , note the location , then go to the location and copy all files including sln file to another location and open it , test if this works.