Invocation of vcvarsall.bat failed: [ERROR:vcvars.bat] Toolset directory for version '14.39' was not found. [ERROR:VsDevCmd.bat] *** VsDevCmd.bat encountered errors. Environment may be incomplete and/or incorrect. *** [ERROR:VsDevCmd.bat] In an uninitialized command prompt, please 'set VSCMD_DEBUG=[value]' and then re-run [ERROR:VsDevCmd.bat] vsdevcmd.bat [args] for additional details. [ERROR:VsDevCmd.bat] Where [value] is: [ERROR:VsDevCmd.bat] 1 : basic debug logging [ERROR:VsDevCmd.bat] 2 : detailed debug logging [ERROR:VsDevCmd.bat] 3 : trace level logging. Redirection of output to a file when using this level is recommended. [ERROR:VsDevCmd.bat] Example: set VSCMD_DEBUG=3 [ERROR:VsDevCmd.bat] vsdevcmd.bat > vsdevcmd.trace.txt 2>&1