Error message when trying to acquire and HA pair "Login failed as the serial numbers do not match"

Error message when trying to acquire and HA pair "Login failed as the serial numbers do not match"

Applies to:

All Sonicwall UTM appliances in HA pair

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Problem Description:

Error message when attempting to register SonicWall devices in an HA pair with GMS: "Login failed as the serial numbers do not match"

Resolution/Workaround:

Step 1: Make sure you are using the serial number for the primary unit only. You do not need to add the serial number for the backup unit in GMS.
Step 2: Make sure you are  failed over to the Primary unit before trying to acquire in GMS
Step 3: If you are failed over to the backup unit when completing this process you will get the following error message in GMS "Login failed as the serial numbers do not match".

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