Online archive can take 24 hours or more to complete, it depends on what you have it set to archive. Mail older than 5 years, mail older than 3 months etc. Why not limit the caching to a more reasonable 1 year, if they need to access things outside of this, they can, they just have to click ‘view messages on server’ to do so. So, comments about his email box size aside (which I cannot Office 365 support and fixes change or make him clean up at this time), I need this fixed really fast toda ...