Outlook allows you to work in either offline or online mode. If this step is not performed before sharing, the folders will remain inaccessible to those users. This issue might occur if you access your Office 365 email account in Outlook. However, sometimes, faulty add-ins can cause problems with the normal working of Your local mailbox size (Outlook PST file) might not be large enough to store all your email messages. My friend has given me permission to access the drive through an outlook email. Also, go to Filter > Sort by and choose to sort it by date. Outlook has been around for quite a while and is one of Microsoft’s primary products.
The problem is that the mailbox is still visible in Outlook after removing the permission.
Don't ask me why but I've witnessed that if the shared account ( This e-mail address is being protected from spambots.