LINK : fatal error LNK1104: cannot open file

[kavi1]

Iam getting the following error while i build my project
"LINK : fatal error LNK1104: cannot open file ..."
While i try to build individual projects it builds fine,but when i build my main project it is giving this error.I did try on google but it did not help much. I checked for the path of the library I can see the file is present,the path is correct .
Any help on this is appriciated.

[weaknessforcats]

I suspect that you have been debugging this program and have left the program running thereby preventing the linker from updating your executable file. Be sure your program is not in execution.