@masek even on linux i have separate browser for MShit accounts. They are too stupid to manage sessions and cookies properly. But on windows, with a domain login its insane. I have work laptop where I login onto a domain account name@company.domain then i have to login into my MS account ... the same one, and it redirects me by a browser, but in browser you need to login separately to website in office365. BUT if i sign out of ANY of these places, randomly - some of them are logged out too, some not, and if i go to an app or site that is not logged out, all other are magically logged in. Ou and if i try to login in anything into ANOTHER office 365 account (even in "incognito" browser) - everything messes up. HATE it.