When compiling mod_auth_external on Windows, the SystemRoot environment variable was not set.
%SystemRoot% is supposed to point to the directory where Windows is installed (e.g. C:\WINDOWS or D:\OS\WINNT or whatever you set it to when you installed Windows)
Seemingly random things stop working when the SystemRoot environment variable is missing:
When compiling mod_auth_external on Windows, the SystemRoot environment variable was not set. %SystemRoot% is supposed to point to the directory where Windows is installed (e.g. C:\WINDOWS or D:\OS\WINNT or whatever you set it to when you installed Windows)
Seemingly random things stop working when the SystemRoot environment variable is missing:
p.s. also the random spelling fix from earlier is in here too for convenience...