Citrix Licensing Manager Issue: Licenses Kicked Out in Version 11.17.2.0 Build 51000

Recently global issue happened where license is missing from License manager. When i try reapplied the license, it keeps kicking and deleting.

Issue Description

• Users experience access denied

  

• The Citrix License Manager interface does not show the expected licenses.

• Applications relying on Citrix licenses become inaccessible.

• The issue appears to be widespread among those using Citrix License manager version 11.17.2.0 build 51000.

Solution

1.1 Back Up License Files

• Navigate to:

    C:\Program Files (x86)\Citrix\Licensing\MyFiles
  

• Copy all .lic files to a safe location.

1.2 Export Citrix License Server Settings

• Open Registry Editor (regedit).

• Go to:

    HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Licensing
  

• Right-click on the Licensing folder and choose Export.

• Save the file as Citrix_License_Backup.reg.

1.3 Backup the License Server Database

• Navigate to:

    C:\Program Files (x86)\Citrix\Licensing\LS
  

• Copy the db folder to a backup location.

Step 2: Uninstall Citrix Licensing Manager

To successfully downgrade, you must remove the newer version first.

2.1 Stop Licensing Services

• Open Services.msc and stop:

  • Citrix Licensing

  • Citrix License Management Service

2.2 Uninstall Citrix Licensing Manager

• Go to Control Panel > Programs and Features.

• Find Citrix Licensing Manager.

• Click Uninstall and follow the prompts.

2.3 Delete Residual Files

After uninstalling, delete leftover files:

• Navigate to:

    C:\Program Files (x86)\Citrix\Licensing
  

• Delete any remaining files.

• Remove Citrix Licensing registry entries:

    HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Licensing
  

• Restart your server.

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Step 3: Download and Install Version 49000 or Lower

3.1 Download the Older Version

• Visit Citrix Download Center.

• Search for Citrix Licensing Manager 11.16.6.0 build 49000 or your preferred older version.

• 

• Download the .exe installer.

3.2 Install the Older Version

• Run the installer with Administrator privileges.

• Follow the setup wizard and complete the installation.

• Restart your server after installation.

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Step 4: Restore Backups and Reconfigure

4.1 Restore License Files

• Copy the .lic files from your backup to:

    C:\Program Files (x86)\Citrix\Licensing\MyFiles
  

4.2 Restore Registry Settings

• Double-click the Citrix_License_Backup.reg file.

• Confirm the merge.

4.3 Restore Database Files

• Copy the backed-up db folder to:

    C:\Program Files (x86)\Citrix\Licensing\LS
  

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Step 5: Restart Services and Verify

5.1 Restart Licensing Services

• Open Services.msc.

• Start:

  • Citrix Licensing

  • Citrix License Management Service

5.2 Verify License Availability

• Open Citrix Licensing Manager via:

    https://<your-license-server>:8083
  

• Ensure licenses are recognized and assigned correctly.

5.3 Test License Assignment

• Run:

    lmstat -a -c @<LicenseServerName>
  

• Confirm licenses are displayed.