Today I noticed that my Samsun Email App stopped syncing with company o365, so I did couple things to troubleshooting but no luck.
1. I remove the accout and readd it.
a. Sometimes it works, I can add it. And it downloads emails up to date. Then it stops syncing after couple minutes.
b. Most of time, it says Couldn't verify your account. And I can't add the emai account
2. I uninstall the update, same issue
3. I install the update back , same issue.
4. I reset app data, same issue
5. I reset all phone setting, same issue
6. I clean up cache partition, same issue.
7. I remove this phone from my o365 account, same issue.
I finally install Outlook App, which works like a breeze.
But I really like the native email app, can anyone please help me on this? BTW, I don't want to do a factory reset just for this.
Thanks in advance.
Hi there, @XNote9.
Could you try removing the Outlook account and then re-adding it as an Microsoft Exchange account? You can do this by going to: Settings > Cloud & Accounts > Accounts > Add Accounts > Microsoft Exchange > Enter details.
Let us know if you have more success with this.
Welcome to the Community!
I got this issue solved. It turned out to be a limit from Microsoft o365, here is the KB for it.
Basically, if you mobile device syncs too much in a short period with o365, o365 will block it for 30-60minutes. In my testing, it's around 50 mintues. When I do the initial sync, I got blocked. Then I have to trun off syncing or change it to manually and wait for 50 mintues, then continue syncing. I've been blocked twice before I finished syncing 3 days emails.
And this is only blocking mobile device if you are using native email app, Outlook app will not be blocked.
Well,, new stuff every day.