What to do if 'An instance of the installer is already running' appears

What should I do if "an instance of the installer is already running" appears?

One instance of the CAD installer is already running. Only one instance of the installer can be run at a time. This is caused by a setting error. The solution is:

1. In the toolbar of the computer Right-click on it and select Start Task Manager.

#2. Select the process and find the SetUp.exe process in the process list.

#3. Right-click on the process and select End Process. Kill this installer, and then installation or uninstallation can proceed normally.

#4. When uninstalling, the system will not prompt that the instance can only be run once, and it can be uninstalled normally.

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