Using classic Outlook for Windows in business environments
Hi, Nedda,
I did not get that error message, but I'm thinking that if your signature is relatively easy to re-do (or maybe to copy-off and re-add), then getting rid of the old signature and re-adding one is not such a bad option.
I would ask you to check to see if you selected (highlighted) the specific signature name for the account to which you were assigning it. It may have given that message if none of the signatures in the list are selected.