Modelsim What happens when this error occurs

The author's computer was installed as a win8 system, and then opened Modelsim as usual, then jumped out of the interface:

The author's Modelsim before is installed, so this interface has been explained that the current license is not installed. The solution to this problem is to reinstall the license.

First copy the following two files to the Modelsim-->win64 folder

Run Patch_dll first, and then run MENTORKG, during which the license file is generated, note that the save can be saved under the Win64 file, or can be saved in a different folder, note that there is no Chinese.

Open the advanced system settings for your computer, and then create a new environment variable.

In the system variable, click New, enter Mgls_lecense_file in the variable name, enter the variable value before the license path, OK.

The Modelsim can be run properly again.

Modelsim What happens when this error occurs