The best way to resolve a License Manager Error -9 is by reactivating MATLAB with the activation client.
For Windows the activation client is located here :
C:\Program Files\MATLAB\R20XXx\bin\winXX\activate_matlab.exe
For Mac see the following steps :
- Open Finder.
- Go to "Applications".
- Right-click or control-click on the MATLAB application icon. (e.g. MATLAB_R2015b.app)
- Click on "Show Package Contents".
- Open "Activate.app".
For Linux the activation client is located here :
/usr/local/MATLAB/R20XXx/bin/activate_matlab.sh
Once you have launched the MATLAB activation client:
- Select "Activate automatically using the internet."
- Log into your MathWorks account.
- Select the correct license.
- The username field should auto-populate with the correct user name. Leave it as is.
- Confirm the activation information.
- Click "finish" to complete the activation process.
- Restart MATLAB.
If you are still seeing a License Manager Error -9 :
- The username in the license file does not match
- The Host ID in the license file does not match
- You have a Designated Computer MATLAB license and MATLAB is already running under a different user account on this computer.
Confirm your Username and Host ID using the activation client :
- Run the activation client and select "Activate manually without using the Internet."
- Choose “I do not have a license file. Help me with the next steps.”
- Copy your Host ID and Computer Login Name.
- Click the back arrow 2 times and choose “Activate automatically using the Internet” then input the appropriate username.
- Launch MATLAB using the appropriate user account.
Activation client requires elevated privileges to run? Connection error when Activating automatically? Still seeing a License Manager Error – 9?
How do I activate MATLAB without an internet connection? See the following link -
