You try to add an IMAP email account to the new Outlook for Windows and the setup fails. This error prevents you from sending or receiving emails from that account. The failure is usually due to incorrect server settings or a security configuration on the provider’s side. This article provides the steps to diagnose and fix the most common IMAP setup errors.
Key Takeaways: Fixing IMAP Setup in New Outlook
- Settings > Accounts > Add Account > Advanced setup: Manually enter the correct incoming and outgoing server addresses from your email provider.
- IMAP port 993 with SSL/TLS: The standard secure port for incoming mail that most modern providers require.
- SMTP port 587 with STARTTLS: The standard secure port for outgoing mail that bypasses many network blocks.
Why New Outlook Fails to Add IMAP Accounts
The new Outlook app attempts to automatically configure accounts using common server settings. For IMAP accounts from smaller providers, custom domains, or older services, this auto-discovery often fails. The app may use outdated default ports or incorrect security protocols. The error message is frequently generic, such as “Something went wrong” or “We couldn’t find your settings.”
You must use manual setup to enter the precise server information. This includes the incoming IMAP server, outgoing SMTP server, and the correct port numbers with their associated encryption methods. You also need to verify if your email provider requires an app password instead of your regular account password, especially if you have two-factor authentication enabled.
Steps to Manually Configure an IMAP Account
Follow these steps to add your account using the correct manual settings. First, gather the required server details from your email provider’s help documentation.
- Open Account Settings
In the new Outlook, click the gear icon for Settings. Select Accounts from the menu, then click Add account. - Start Advanced Setup
In the Add an account window, click Advanced setup at the bottom. Choose Internet email as the account type. - Enter Account Details
Fill in your name, email address, and account description. For Account type, select IMAP from the dropdown menu. - Configure Incoming Server
In the Incoming mail server field, enter your provider’s IMAP server address, like imap.provider.com. Set the Port to 993. From the dropdown for encryption, select SSL/TLS. - Configure Outgoing Server
In the Outgoing mail server field, enter the SMTP address, like smtp.provider.com. Set the Port to 587. From the dropdown for encryption, select STARTTLS. - Enter Credentials and Finish
Type your full email address as the User name. For the Password, use your account password or a generated app password if required. Click Connect to complete the setup.
Using an App Password for Two-Factor Authentication
If your email account uses two-factor authentication, you cannot use your normal password. You must generate a unique app password from your provider’s security settings.
- Generate the App Password
Log into your email provider’s website. Navigate to security or two-factor authentication settings. Find the option to create an app password and generate one for Outlook. - Use the App Password in Outlook
During the manual setup in Outlook, paste this 16-character app password into the Password field instead of your regular account password.
If Manual Setup Still Fails
Error: “Outlook cannot connect to the server”
This error after manual entry means the server addresses or ports are wrong. Double-check the exact server names with your provider. Try the alternative secure SMTP port 465 with SSL/TLS encryption. Temporarily disable any third-party firewall or antivirus software to test if it is blocking the connection.
Error: “Authentication failed” or “Invalid credentials”
Verify your username is your full email address. Ensure Caps Lock is off. If two-factor is on, you must use an app password. Some providers require you to enable IMAP access in your account’s webmail settings before it will work in Outlook.
Connection Times Out or Hangs
This often points to a network or port block. Confirm you are not on a restricted corporate network. Test the connection on a different network, like a mobile hotspot. Ensure your router is not blocking the specific IMAP or SMTP ports.
Manual IMAP vs. Auto-Discover Setup
| Item | Manual IMAP Setup | Auto-Discover Setup |
|---|---|---|
| Control over settings | Full control to enter exact server addresses and ports | Outlook guesses settings, which can be incorrect |
| Success rate with custom domains | High, when correct info is used | Low, often fails without proper DNS records |
| Required information | IMAP/SMTP server, port, encryption type from provider | Only email address and password |
| Two-factor authentication | Works with app passwords | Usually fails unless app password is pre-configured |
| Time to configure | Longer, requires looking up settings | Faster when it works |
You can now add IMAP accounts that fail during automatic setup. Use the manual configuration method in Settings > Accounts with the correct ports. For accounts with two-factor authentication, remember to generate and use an app password. If errors persist, verify your provider’s server settings in their help documentation, as they can change.