You want to enable Cached Exchange Mode for shared mailboxes in Outlook while keeping your primary mailbox in Online Mode. This configuration reduces server load and improves performance when accessing large shared mailboxes, but Outlook does not offer a direct toggle for this. The default settings apply the same mode to all mailboxes in a … Read more
When you try to send an email from an alias address in Outlook, the alias may not appear in the From field dropdown list. This happens because Outlook only shows addresses that are explicitly added to your profile as SMTP aliases with send-as permissions. This article explains why the alias is missing and provides step-by-step … Read more
You have an Outlook profile set up with a POP3 account and want to switch to IMAP without losing your existing emails, folders, or settings. Reimporting a PST file and reconfiguring everything from scratch can take hours and risks data loss. This article explains how to change your Outlook profile from POP3 to IMAP without … Read more
When you are granted full access permissions to a shared mailbox in Exchange Online or Exchange Server, Outlook automatically adds that mailbox to your profile. This feature is called auto-mapping. While convenient, auto-mapping can clutter the folder pane with unwanted mailboxes, slow down Outlook startup, or confuse users who see mailboxes they do not need. … Read more
You need to access another person’s mailbox in Outlook because they granted you full access permissions. Full access allows you to read, create, and delete items in that mailbox as if it were your own. This article explains how to add a delegated mailbox with full access using two methods: Auto Mapping and manual configuration. … Read more
When you open Outlook in a hybrid Exchange environment, you may see a repeated prompt asking you to choose between your local mailbox and your cloud mailbox. This loop prevents you from accessing any email. The issue occurs because Outlook detects two conflicting Autodiscover responses — one from the on-premises Exchange server and one from … Read more
You need to digitally sign an email in Outlook using a certificate stored on a smart card. Smart cards issued by your organization hold a private key and a personal certificate that proves your identity. When you sign an email with this certificate, recipients can verify that the message came from you and was not … Read more
Your Outlook account shows ‘Microsoft Exchange’ in the account type field, yet the program behaves like an IMAP account: messages stay on the server, folders do not sync automatically, and offline access is limited. This mismatch typically occurs when Outlook is configured to connect to an Exchange mailbox using the IMAP protocol instead of the … Read more
When you have multiple email accounts configured in Outlook, the Calendar app may not always open with the calendar you want to see first. By default, Outlook selects the calendar from the account that was added first or the one designated as the primary Exchange account. This can be frustrating when you need to see … Read more
When you open an Outlook web add-in that uses single sign-on, you may see a sign-in prompt that keeps reappearing after you enter your credentials. This creates an infinite sign-in loop that blocks you from using the add-in. The root cause is a broken trust relationship between the add-in and the Microsoft identity platform, often … Read more