Moderator Note: Product issue, moved to the Workstation Pro area.
What is your host OS and version? Workstation version?
I assume that Windows Updates ran, and installed the latest MS patches, which blacklist VMware Workstation versions up to version 15.0.
Only VMware Workstation 15.5 is officially supported for Windows 10 (1903).
If you want, take a look at my reply at Re: VMware Workstation Pro can't run on Windows
I bought workstation pro 14 in March 2018 only to have it completely bricked 1 year and 6 months later. That is not a good enough working time frame to have this software completely not working, not just end of support or buggy but wont even launch. $233 dollars wasted on crappy software from both MS and VMware. Utterly disgusted with both companies.
Sorry for this inconvenience. Pls refer to Statement for Workstation 15.0 and earlier being blocked by Microsoft KBs. Also try whether workarounds mentioned in that threads works for you.
VMware Workstation Team