hello, i am using thunderbird since years. i have several email accounts. at restart, i have to logon once and it is working until the laptop is shutdown. or ... it was working. to be noted: all accounts at hostmonster. a few weeks ago i added an email address i use when working as freelancer. this account is "somewhere" within outlook/office365 = the company i work for. after that setup was done, i have the problem that the login done for my "hostmonster" email accounts seems to be "lost" during the day. the automatic update of incoming emails stop working now-and-then. i am asked to logon again when checking if any new email. when sending email, hours after initial start of thunderbird, i have to login again ... and even worse, sometimes send messages fails to be saved in outgoing message folder. i assume that this problem has to do with the newly added email account linked to the office365 account. i can receive and send messages and i have have to logon which is also somewhat strange. please let em know what i did wrong... thanks in advance for advises