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License is invalid

Issue

When working in AutoCAD, you receive the following error:

"License error. Your license is invalid. Please contact your local authorized AutoCAD dealer"

Solution

This error can be caused if FlexNet Licensing Service 64 is disabled.  You need to enable the service in Services console of your Windows operating system.

1.Open Windows Task Manager
2.Click on Service
3.Locate  FlexNet Licensing Service 64
4.Right click on it and select properties
5.Change Startup Type to Automatic

 This Error can also be caused by memory footprint for acad.exe going over 2GB.  AutoCAD and other applications are often limited to 2GB of total memory usage on 32bit operating systems, regardless of the amount of memorry installed on your PC. If the crashes occur due to memory limitation it can be expanded to 3GB memory limitation. To do this:

1. Run "cmd" (Command Prompt) as Administrator

2. Type the following command

3.  enter "bcdedit /set IncreaseUserVa 3072"

5. Restart the computer.

 

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