Problem with deauthorization of concurrent use license. For limited time i need license on another computer (at home) and make authorizarion (not borowing) from license server (at work). When later try to deauthorize get error "Error returning fulfillment (FID-1415296154) to license server ... ". Any suggestions please.
Contact Esri support, they can reset the license.
(Excerpt from my internal KB)
[...] Each time there was a message "Error returning fulfillment (FID-999...) to license server (SERVER)", where "SERVER" refers to a machine that no longer exists. Afterwards the total license counts for all products on this LM were wrong. Some higher, others lower. Our corporate license admin (Ryan Gould) supplied a recipe that fully resolved the issue.
REPAIR CORRUPT LICENSE AUTHORIZATION
Delete the licensing trusted storage: