Click the Office 365 account, and then click Change. Exit, and then restart Outlook.
Re: Outlook not updating inbox The root of the problem may be that the second account has a large number of folders > 500 will cause a problem with the OST file, it cannot handle more then 500 folders (in all accounts in this current profile) and this is why turning off cached mode may help. Removing this 2nd account may also correct this issue.
It does not update automatically when send / receive operation is performed to download emails from the server. This behavior of Outlook 2016 (or other Outlook versions too) occurs because of a damaged Send / Receive group within Outlook. To resolve this problem, you need to create a new send / receive group in MS Outlook.
How to fix outlook not updating pst file?
May be PST file is corrupted. In case the file is corrupted, then you can try to fix it by running inbox repair tool scan, and pst., and exe. In case, the Inbox repair tool fails to fix the issue, then you need an Outlook Repair tool like Remo Repair Outlook PST to fix the PST file and subsequently the not updating issue.
Why am I not receiving emails in outlook?
There could be all kinds of reasons for not receiving emails in Outlook, please try the below methods: 1: check junk folder or other folders for messages. 2: check rules. 3: create a new Outlook profile to see if this issue still exists. For instruction please see Create a new Outlook profile.
You should be asking “Why is my outlook 2016 not receiving emails?”
Some authors claimed This behavior of Outlook 2016 (or other Outlook versions too) occurs because of a damaged Send / Receive group within Outlook. To resolve this problem, you need to create a new send / receive group in MS Outlook.