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Setting Up an Email Account in Outlook (POP/IMAP/Exchange)

Microsoft 365 & Office KB-088

Summary

This guide helps you troubleshoot and resolve: Setting Up an Email Account in Outlook (POP/IMAP/Exchange). Follow the steps below to fix the issue.

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Common Causes

Prerequisites

  • Microsoft Outlook installed (Outlook Desktop for Microsoft 365, Outlook 2019/2021/2024, Outlook for Mac, or Outlook on the web).
  • Email address and password.
  • For manual setup: server details supplied by your email service provider or IT organisation.

Primary Account vs Secondary Account

This article covers setting up your primary Microsoft 365 or Exchange mailbox in Outlook. If you are adding a secondary email address to an existing Outlook profile, the steps are similar, but you should use the Add Account option rather than configuring a new profile from scratch.

Method 1: Automatic Setup (Microsoft 365 and Exchange)

Automatic setup uses modern authentication (OAuth) and Autodiscover to configure your mailbox. Do not enter manual POP/IMAP server details unless your provider does not support Autodiscover.

Outlook Desktop (Windows)

  1. Open Outlook.
  2. Choose File > Add Account.
  3. Enter your full Microsoft 365 or Exchange email address.
  4. Click Connect.
  5. If a Microsoft sign-in window appears, enter your password or complete the web-based sign-in flow.
  6. Complete any Multi-Factor Authentication (MFA) prompts.
  7. Click OK or Finish. Outlook will configure the server settings automatically.

Outlook for Mac

  1. Open Outlook.
  2. From the menu bar, choose Outlook > Settings (or Preferences).
  3. Select Accounts.
  4. Click the + button and choose New Account.
  5. Enter your email address and click Continue.
  6. Follow the sign-in prompts and complete MFA if required.

Outlook on the Web

Outlook on the web is used to access your primary Microsoft 365 mailbox by signing in at outlook.office.com with your organisational credentials. It does not require manual account setup. The Connected accounts feature is only for linking secondary, non-Microsoft mailboxes and should not be used to configure your primary Exchange account.

Manual Setup (Third-Party POP/IMAP Only)

This section is for third-party email providers such as Gmail, Yahoo, or private hosts. It is not required for Microsoft 365 or Exchange accounts. Manual POP/IMAP options may be hidden or removed in newer Outlook builds. If you do not see manual options, contact your provider for Autodiscover support.

Manual setup should only be used when automatic setup fails and your provider supports POP or IMAP access.

Outlook Desktop (Windows)

  1. Open Outlook.
  2. Choose File > Account Settings > Account Settings.
  3. On the Email tab, click New.
  4. Enter your email address.
  5. Click Advanced options and select Let me set up my account manually.
  6. Click Connect.
  7. Select IMAP or POP.
  8. Enter the incoming and outgoing server details supplied by your provider.
  9. Enter your password (or app password if required).
  10. Click Connect, then OK and Finish.

Outlook for Mac

  1. Open Outlook.
  2. Choose Outlook > Settings > Accounts.
  3. Click + > New Account.
  4. Enter your email address and click Continue.
  5. If automatic detection fails, select IMAP or POP and enter the server details manually.
  6. Enter your password or app password and click Add Account.

Typical modern standards for third-party providers are:

  • IMAP incoming: port 993 with SSL/TLS.
  • POP incoming: port 995 with SSL/TLS.
  • SMTP outgoing: port 587 with STARTTLS.

POP3 Warning: POP downloads messages from the server to your local computer. Depending on your settings, messages may be deleted from the server after download. This can result in data loss if your local PST file becomes corrupted or is not backed up. Microsoft 365 and Exchange accounts use IMAP-style synchronisation and are not affected by this limitation.

Legacy Authentication Warning: Many providers have disabled basic authentication for POP and IMAP. If your account uses two-factor authentication, generate an app password and use that instead of your regular account password. Do not enable “less secure apps” or similar legacy settings.

Verifying Autodiscover DNS Records for Australian Domains

Autodiscover allows Outlook to locate your mail server automatically using DNS records. For Australian domains hosted with Microsoft 365 or Exchange, confirm the following:

  • An Autodiscover CNAME record points to autodiscover.outlook.com, or
  • An SRV record for _autodiscover._tcp.yourdomain.com.au is published.

Use a public DNS lookup tool or contact your domain registrar or IT helpdesk to verify these records. If Autodiscover records are missing or incorrect, Outlook will fail to configure the account automatically.

First Sync

  • After the account is added, Outlook begins downloading mail, contacts, and calendar items. The initial sync can take from a few minutes to several hours depending on mailbox size.
  • Microsoft 365 and Exchange accounts use Cached Exchange Mode and store data in an OST file.
  • POP accounts typically download messages to a local PST file.

Outlook Mobile (iOS and Android)

This article covers Outlook Desktop and Outlook on the web. For Outlook mobile, download the Outlook app from the Apple App Store or Google Play Store, tap Add Account, enter your Microsoft 365 email address, and follow the sign-in prompts. Modern authentication and MFA are required.

Troubleshooting

Autodiscover Failures

  • If Outlook displays “We couldn’t automatically find the settings for your domain”, verify your internet connection and email address spelling.
  • For Microsoft 365/Exchange, contact your IT helpdesk to confirm Autodiscover DNS records are published.
  • Check that your domain’s DNS records have propagated. Changes can take up to 24–48 hours.

Outlook-Specific Error Codes

  • 0x8004010F: Outlook data file (PST/OST) not found or inaccessible. Recreate the Outlook profile or repair the data file.
  • 0x8004210B: Outlook cannot send mail. Verify SMTP server settings and authentication.
  • 0x8004210A: Operation timed out. Check your internet connection and firewall settings.
  • 0x800CCC0F: Connection to the server was interrupted. Verify network connectivity and server availability.

OAuth and Credential Issues

  • If you receive “Something went wrong” or are repeatedly asked to re-enter your password, verify your password or app password.
  • Complete any MFA prompts in the browser-based sign-in flow.
  • Clear cached credentials in Windows Credential Manager if Outlook continues to use stale tokens.

Australian ISP Port Blocking

  • Many Australian residential ISPs block outbound port 25 to prevent spam. If you are using a third-party SMTP server on port 25, outgoing mail will fail.
  • Use port 587 with STARTTLS or port 465 with SSL/TLS for SMTP submission instead.
  • Contact your ISP to confirm whether port 25 is blocked on your connection.

Profile Corruption

  • Close Outlook completely.
  • Open Control Panel > Mail > Show Profiles.
  • Select your profile and click Remove, then click Add to create a new profile.
  • Re-add your email account using Method 1.

Send and Receive Problems

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When to Seek Further Assistance

If manual settings are correct but the account still will not connect, contact your email service provider’s support or open a ticket with your organisation’s IT helpdesk: Open a Ticket.

For additional help with Microsoft 365 or Exchange configuration, your IT administrator can review mailbox licensing, Autodiscover records, and Outlook profile settings.

Last reviewed: 15 May 2024

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