Accounts using Exchange Web Services are possible as an experimental feature in version 128. After enabling experimental features in the config editor, the option of Exchange Web Services appears when creating a new account. I am not able to create an account. The first time that I click on "Done" after entering my account information and selecting "Exchange Web Services" as the protocol, the "Done" button is dimmed and nothing more happens. If I click on"Cancel" and try again, a message says that the incoming server is already in use with another account. That is true. Questions: # What is preventing me from setting up the account the first time that I try? Is it the shared incoming server, even though no message is given, or something else? # How reliable is the support for Exchange Web Services? It is experimental, but it could still be more good or more bad. # What is the best way to avoid having the new account and the existing account use the same incoming server? If the new account works well, it will replace the existing one. I deleted the old account and tried setting up the new account in its place, but still received the message about the same incoming server being used. What is making Thunderbird think that the same incoming server is being used after the old account was deleted? Is there something that I can do with a new profile that would help me get through these obstacles? Many thanks for any help. Scooter