In Classic Outlook, select Send/Receive > Work Offline, then select it again if necessary until the status bar changes from Disconnected or Working Offline to Connected.^1^
1. Reset offline mode
- Open the Send/Receive tab.
- Check Work Offline:
- A shaded button means offline mode is active.
- Select it once to return online.
- If the status changes to Working Offline rather than connecting, select Work Offline again.
- Wait a minute and check the status bar.
Since Update Folder already attempts but fails to connect, there is no need to repeat it until the status changes.
2. Identify the account and test the mailbox outside Outlook
In Outlook, open File > Account Settings > Account Settings and check the Type column on the Email tab. A genuine Exchange account appears as Microsoft Exchange.^2^
Then sign in through the mailbox provider’s website:
- If webmail also cannot send or receive, contact the organization or provider managing the mailbox; this indicates a mailbox or service-side issue.
- If webmail works, the mailbox service is available and the problem is isolated to the laptop’s Outlook configuration. The working iPhone alone does not identify whether this is Exchange Online, an organization’s Exchange server, or another provider.
Install any available Office updates before rebuilding the configuration; Microsoft includes updates among its supported reconnect steps.^1^
3. Test with a new Outlook profile
Create a separate profile rather than deleting the existing one:
- Close Outlook.
- Hold Shift while starting Outlook.
- In the profile picker, select Options.
- Enable Prompt a profile to be used so the old profile remains available.
- Select New, enter a profile name, and select OK.
- Enter the mailbox email address and password, then allow automatic setup to complete.
- Start Outlook with the new profile and check whether the status becomes Connected.^3^
If automatic setup requests an app password, obtain one from the email provider and use it instead of the normal password. This applies to certain IMAP and other provider-hosted accounts, not automatically to every Exchange mailbox.^4^
If the new profile also remains disconnected, run the Classic Outlook troubleshooter through Windows Get Help. Microsoft documents these troubleshooters for profile setup and other Classic Outlook problems.^5^
4. Exchange administrator check
Only if the account type is confirmed as Microsoft Exchange and both old and new profiles show Disconnected, ask the Exchange administrator to verify that MAPI is enabled for the mailbox. Disabled MAPI is a documented cause of this exact status; the administrator—not the mailbox user—can enable it with Set-CasMailbox.^6^
Also provide the administrator with:
- The mailbox address
- The time of the failed connection
- Whether webmail works
- Whether the fresh profile failed
- Any exact error produced during profile setup
References
- Classic Outlook
- How do I tell if I have an Exchange account in Outlook
- Create a profile in classic Outlook for Windows
- Add an email account to Outlook for Windows
- Resolve Outlook for Windows issues with automated troubleshooting tools | Microsoft Support
- Connection issues between Outlook and Exchange when MAPI is disabled for a user