I have atls.lib in my hard drive, but I can\'t link it into my Visual Studio project. I know that atls.lib is an ATL specific library file, and I have all the ATL files/headers/
In my case the problem was missing ATL/MFC libraries for x64, I had to add them in the Visual Studio installer (it was an open source project, so I wasn't aware of the requirement).
Once again, the invaluable procmon did the job:
While atls.lib was found under $(VCInstallDir)atlmfc\lib
the linker looked in $(VCInstallDir)atlmfc\lib\amd64
.