For years now I have struggled with Exchange, Now Office365, support on SFOS and it has never worked reliably or properly. There are numerous bug reports on this forum (many of them reported by me) covering:
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O365 Mail Synchronisation failing and locking up after the network connection changes from wireless to mobile or vice versa, and which only deleting the account and re-creating it will fix things (which happens several times a day for most of us)
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O365 email accounts freezing after a reboot, again requiring deletion and recreation of the account(s) to fix things
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Not all O365 mail folders either being displayed or synchronised, those that are missing being at random
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Duplicate O365 calendars being created all the time
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O365 accounts being randomly signed out
And so on. My setups have been pretty standard (always up-to-date sync, inbox & other folders, two way sync, provisioning, etc) - although over the years I have tried pretty much every combination of option to see if it improves matters, but with no luck.
For a while I could use IMAP to access Office365 email, but now that Microsoft have removed support for basic authentication this is no longer possible with SFOS because OAuth2 is not supported for IMAP.
I’ve also tried to use Outlook for Android as well, but since mobile data connectivity for Android support regularly breaks in SFOS (there’s a bug report for this as well), this is not really an option either.
There are lots of SFOS users on this forum who have had the same problems as I have, so is Office365 support basically unusable on SFOS for everyone because of the above problems, or have others managed to find a way of getting it working reliably in some way? If so, how did you do it?
For completeness I’m on Xperia 10 III running the latest .24 release of SFOS, but have been plagued by these issues with no resolution across many previous releases.