The most common trigger for Error #30 is an incorrect system date. If your computer's clock is set to a date before the license was issued or after it expires, the license will be flagged as invalid.
: The primary license file ( lservrc ) in the installation directory may be missing or contain invalid data. license not recognized error 30 etabs 2016
: Change your PC's date/number format to US (mm/dd/yyyy) to ensure compatibility with the license reader. The most common trigger for Error #30 is
: Ensure your PC's date and time are accurate. Some users find success by temporarily setting the system date back to a time when the license was known to be valid to bypass immediate expiration blocks. license not recognized error 30 etabs 2016