Harry Lam added the comment:
Slight bit of clarification:
This doesn't affect all scripts -- just those which don't have proper Except
OSError handling. In pip's case, a timeout is not passed to the acquire()
function when it is first being called and causes this iss
New submission from Harry Lam (WaXHeLL):
Storage Spaces (RAID volumes) under Windows 8.1 / Server 2012 R2 use ReFS which
does not support hard links.
If the Users directory has been moved to a ReFS volume, it causes any script
that uses os.link to hang (pip is one of the notable examples). As
