Hi liuqimin,
We are using the FLEX LM tools for licensing checking. The list of FLEX LM codes can be found here: https://knowledge.autodesk.com/search-result/caas/sfdcarticles/sfdcarticles/Common-FlexNet-error-cod...
LM_BADSYSDATE might be issued when:
- the host PC system date/time is wrong (set in the past or future)
- there are files save on your PC that migth have a wrong date (from past of future)
The FLEX LM is looking for all sort of hints to check if you try to trick the PC time, including older logs that might indicate you have tempered the PC time.
Please run a file search based on files creation date/time (future or past). If you find such files you need to remove them from your system.
Best regards,
Daniel