Which there are like a zillion pages out there and also here to solve. Common solutions include:
Microsoft Visual C++ Redistributable Package (x64)
I did try all and none solved the issue. In this SO post it has been suggested to use dependencywalker to pinpoint the missing dependencies. I opened the netgen.exe in dependencywalker and it gives me this message:
Error: At least one required implicit or forwarded dependency was not found. Error: At least one module has an unresolved import due to a missing export function in an implicitly dependent module. Error: A circular dependency was detected. Warning: At least one delay-load dependency module was not found.
and when I do profiling it gives me the message:
windows\core\console\open\src\host\srvinit.cpp(480)\ConhostV2.dll!00007FFBF89A17FB: (caller: 00007FFBF89B0628) ReturnHr(3) tid(2e3c) 80070032 The request is not supported. windows\core\console\open\src\server\devicecomm.cpp(153)\ConhostV2.dll!00007FFBF89ABA9D: (caller: 00007FFBF89A170D) ReturnHr(4) tid(2e3c) 800700E9 No process is on the other end of the pipe. Exited "CONHOST.EXE" (process 0x36A8) with code 0 (0x0).
I don't know what to do from here. I would appreciate if you could help me know what is the problem and how to solve it.
P.S. I have also reported the issue here in the netgen forum.
Presently Netgen 6.1 experimental 64-bit installs fine on Windows 7 Enterprise.
Python 3.5.4 64-bit should first be installed (available at the time of writing from https://www.python.org/ftp/python/3.5.4/python-3.5.4-amd64.exe, newer Python may or may not work, I've not tried it).
Having installed Python for Windows the path should be corrected. The path is edited by right clicking "computer" in the start menu on Windows 7 and then "properties" in the pop up menu and then "advanced system settings" and then clicking on "Environment Variables" and then looking for "Path" in the user variables (top list box).
Despite looking like a 64-bit install of Python (based on the installer exe name), 32- and 64-bit executables are present and Netgen is calling the 32-bit version not the 64-bit and that won’t fly. So we need to adjust the path. The relevant changes for me were editing the python parts of the path to read as
C:\Users\[user name]\AppData\Local\Programs\Python\Python35\Scripts\;C:\Users\[user name]\AppData\Local\Programs\Python\Python35
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