How to resolved "Failed to install licenses. Auth code already in use"

• This error is generated when try to Retrieve licenses keys from licenses server:

• Palo Alto Firewall or Panorama
• Supported PAN-OS

Option1: Retrieve license keys from server.

1. Login to the firewall > Device  > License >Retrieve licenses keys from licenses server.

Option2: Trigger updates from server.

1. Login to  the Firewall > Device Tab > Software > scroll to bottom of page
2. Click on  "Check Now" this will  trigger an update of the license expiration dates.

Option3: Manually download the licenses key from the Support Portal and then manually upload to the firewall.

1. Login to the Support Portal.
2. Go to Assets > Devices
3. Filter by serial number (Serial XXXXXXXXXXX)
4. Download the license key.
5. Then go to the Firewall> Devices tab > Licenses> Manually Upload License Key

Option4: Delete the expired licenses and re-fetch the new license

1. Delete the old/expired license from the CLI :

admin@test(passive)> delete license key WildFire_License_20*
successful

2. Confirm the licenses are deleted 

admin@test(passive)> > request license info

3. Fetch the licenses from the license server

>request license fetch

• To Fetch the licenses using GUI Click on Devices > Licenses > Retrieve license keys from license server
• If those steps does not works , Try Reboot during a maintenance window or Open a Support case.
   

From the GUI Click on Devices > Licenses > Retrieve license keys from license server