A student experienced Revit 2018.1 giving him this rather useless error message:

Licensing System Error 1

After Googling for a solution, we installed/repaired all the Visual C++ runtimes we could find in 3rdParty\x64\VCRedist and in 3rdParty\x86\VCRedist from the Revit 2018 distribution.

Success!

Shame on lazy developers not willing to code reasonable error messages explaning what the program attemped to do with what.

GNU style error messages is a lot better than nonsense words. E.g.:

sourcefile.c: lineno: open("/some/file") = -1, errno = 2 (No such file or directory)


Update 2017-09-05:

Today I had the opportunity to examine another case of “Licensing System Error 1”. This time I installed 3rdParty\x86\VCRedist\2005\vcredist_x86.exe only. As far as I can tell, Visual C++ 2005 Runtime x86 wasn’t installed at all prior to my actions.

  1. Hello dear trainer.
    I am also in the same situation. But I don’t understand the solution. Please can it be clearer for me?
    Thanks.

  2. Start by looking in C:\Autodesk or in the directory where you extracted the installation files. Double click on the directory for Revit 2018. From there on you should see the directory structure I mentioned in my blog post.

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