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License Server - Upgrading your hosted licenses   


Several times per year we release a new feature-version of FlexSim Simulation Software. In order for client PCs to be able to run a licensed version of the upgraded software, you'll need to upgrade the activated license(s) on your license server. Licenses with a current maintenance subscription are eligible to be upgraded to the new version.

If you don't understand how licensing works for different FlexSim versions, please review our Answers article FlexSim Version Numbering.


There are 5 main steps to upgrading the licenses hosted on your lmadmin or lmtools license server:

  1. Return the licenses you intend to upgrade
  2. Upgrade your licenses
  3. Activate the upgraded license
  4. Reread the license
  5. Upgrade client PCs

Several of these steps have their own fully documented procedures. We'll link you to those resources below.

1. Return the licenses you intend to upgrade

The steps to return a license-server-based license are fully documented. Choose the link below that best matches your needs, depending on whether your license server can connect to the Internet:

Be sure to return ALL licenses you wish to upgrade.

2. Upgrade your licenses

NOTE: Licenses with expired maintenance will not upgrade. Timed licenses do not upgrade. Only
permanent (not timed) licenses under current maintenance can be upgraded.

Log in to your FlexSim Account.

If you were already logged in to your FlexSim Account, in the top navigation menu hover over your initials icon and choose Reload Account.


Now in the top navigation menu, choose Licenses > List.


Check that the available seat count is equal to the total. All of a license’s seats should be returned for it to upgrade.

Click on the Upgrade Licenses button.


If you have several licenses to upgrade and all are owned by or shared with your FlexSim Account, they will all be upgraded at once. Please be patient while the upgrade process works in the background.

When the page refreshes, eligible licenses will have a new activation ID for the latest version of the software. Your license code indicates its version at the end of the code to help you know what versions your license will properly activate. Review license code format.

3. Activate the upgraded licenses

The steps to activate a license-server-based license are fully documented. Choose the link below that best matches your needs, depending on whether your license server can connect to the Internet:

4. Reread the license

Your license server needs to start serving up your newly activated licenses. You can either restart your license manager service, or use your license manager's option to reread your licenses.

The steps to reread your licenses differ depending on which license manager you are using to host your licenses. Use these links to jump to instructions for the license manager you're using:

5. Upgrade client PCs

Finally, upgrade your PC with a version of FlexSim appropriate for your new license (learn how licenses work across versions).

After installing a new version of FlexSim, you will need to configure it to get a license from your license server. There are two ways a client PC can be configured. Choose the method below that most closely matches the main use case for your client PC:

  • Single-user client PCs - this method configures settings that are saved on a per-user basis.
  • Multi-user client PCs - usually appropriate for a university computer lab or other shared-PC situation, where the configuration should be computer-based.

Having trouble licensing your client PC? Verify client PC licensing to find out how to tell if your client PC is successfully getting a license from your new license server.

If you have any questions or problems, please search our Answers Community for possible solutions. There is a good chance someone else has already asked your question.

Still not finding what you're looking for? Submit a new question and we'll check it out. If you're including any confidential information, such as license codes, be sure to mark your question as private! You can also contact your local FlexSim distributor for live phone, web, or email help.

license serverlicensinglicense upgradereturn licensemanual licensing
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