Very frustrating issue. I can not figure out how to clean or clear the sign in box which develops history of typed in signature characters. If the signature has an error the system prompts all these as predictive  options . These are absolute nuisance  as there may be a subtle error like a period at the end  and this can cause additional care or be locked into searching for the right address in this box. Best is to be able to keep 1 or 2 signature in the buffer . Since outlook account  replaced the Hotmail  I  started observing  5 or 6 versions of my signatures  in this predictive box . Obviously some of these had typo errors.  So help would be appreciated to be able to clean the buffer.   Many Tanks ........ Kel