https://bugs.winehq.org/show_bug.cgi?id=50361
--- Comment #9 from Zebediah Figura z.figura12@gmail.com --- (In reply to Don Koch from comment #8)
The file is actually called WMINet_Utils.dll (note case). Might try a symbolic link from WMINet_Utils.dll to wminet_utils.dll.
Case shouldn't matter. I'll have to write a test to see if I can reproduce this failure.