VERIFIED SOLUTION i

Resolve error "License Key is stale. RC=14 A valid Access key is required" in MailStream Plus

Note: Access keys and license keys are required with the initial installation of the MailStream Plus (MSP) Software or when installation the MSP software version [i.e. 821 to 830] is installed into location different for the previous software version. 

The access keys do have a freshness date from the time they are downloaded from  www.g1.com/support usually 10 calendar days the permanent license file has the same restrictions. Once the fresh date has expired if the access key or license file is used for installation the user will receive a message indicating the file is STALE; please enter a valid access key or license Key is stale. If the user contacts Technical Support they can provide valid access keys with 10 calendar day freshness dates the license files if they go stale have to be downloaded again from the www.g1.com/support website. 
UPDATED:  April 17, 2017