I tried publishing my outlook calendar once and now I cant seem to get it to stop. I've uncheck the box under Update Frequency in the Publish Calendar Settings but when I close out of it, it is checked again. I've also been to Calendar Options -> Free/Busy Options and put 0 for "Publish months of Calendar..."

Even after all that, this sign in box still pops up every few minutes asking me to sign in calendars.office.microsoft.com to publish my calendar. Basically I dont want that box popping up every few minutes...or ever.