However, you can change the “costs” setting for your network connection so it will no longer be a metered network.For most connections you can do this via a setting in Windows but for some settings, or to change the default, you must set it via the Registry.Most of the times, Outlook stops responding due to a very large mailbox file that it's causing Outlook to require more resources than the computer can offer.
I migrated a VP of our company to Office 365 and now he's not seeing emails in folders that there should be.
Sometimes, it seems that Microsoft Outlook rules do not work automatically even after creating it accurately.
According to the users, the issue which taken place in their Outlook and obstruct rules to work well: “one of the applied rules in Outlook does not work automatically. If you are connected with MS Exchange, then first you should try to Disable Cache Exchange Mode and see whether it is working or not.
The problem seems to affect all folders but only emails after about 6-12 months old. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).
Other "clues" I've found are: Go into email account setting and set your server from IMAP to POP. IMAP mirrors the service providers server and some service providers dump your emails after 2 weeks regardless of your setting. Would you like to answer one of these unanswered questions instead?