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English

Solved - The Connection to Microsoft Exchange is unavailable on Outlook

There is no doubt Outlook is a great application to send/receive emails, perform simple tasks, keep reminders, Skype integration allowing users to make video calls within Outlook, “Sweep” option to organize emails into specific folders. You also have the option to delete messages that are older than a specified number of days.

A Microsoft Exchange account is usually a work or school email account. Your email service is provided by a Microsoft Exchange Server and all your emails are delivered to and saved in your mailbox on the business’s Exchange server.

Before fixing the error it is suggested to backup the OST file by converting to PST using an OST converting tool.

At times, you may encounter the following error while accessing your Exchange account:

“The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action.”

Let us look at the different ways we can tackle this error.

  1. Try creating a new Outlook Profile
  2. Try Restoring Registry settings
  3. Flush DNS of your computer
  4. Restart Microsoft Exchange System Attendant Service
  5. Repair Corrupt Outlook Profile

Method 1. Create a new Outlook profile

When you create a new email account in Outlook, it is saved as a profile. Your old profile could have been corrupted due to any internal problem within Outlook.

Step 1: To open a new profile, open Control Panel.

Step 2: In the “View by” drop-down, select “Large Icons”.

Step 3: Now click on Mail (Microsoft Outlook). A window opens up.

Step 4: Now select Show Profiles.

Step 5: Select the existing profile and click on Remove to delete that profile.

Step 6: Once that profile has been deleted, now create a new account by clicking on Add button. Just follow the on-screen instructions to create a new profile.

Restart your Outlook application now. The issue should be resolved.

Method 2. Restore Registry settings

In this method, you have to import the User Shell Folders registry key from a working Windows user profile.

Make sure you follow all the steps carefully since you will be modifying the registry. To be on the safer side, backup your registry before any modification. Then, you can restore the registry if any issue occurs.

Backup registry manually

  • Go to Windows Start Menu. Type exe in the search box and press Enter. If you are prompted to provide an Administrator password, just type it and proceed.
  • In the Registry Editor, just locate and click the registry key or subkey that you want to backup.
  • Click File -> Export.
  • In the Export Registry File dialog box, select the location where you want to save your backup copy and give a name for the file in Filename
  • Click Save.

Now that you have backed up your registry, it’s time to restore the registry.

On a working computer,

  • Start Registry Editor.

In Windows XP, Click Start -> Run – Type regedit and click Ok.

In Windows Vista, click Start, type regedit in the Start search box, and press Enter.

In Windows 7, click Start, type regedit in the Search programs and files box, and press Enter.

  • Locate and select this registry subkey:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders

  • In the File menu, click Export.
  • Specify the name of your .reg file and click Save.
  • Now copy this .reg file to the computer showing this problem.
  • Close your Registry Editor.

On the computer showing errors,

  • Start Registry Editor.

In Windows XP, Click Start -> Run – Type regedit and click Ok.

In Windows Vista, click Start, type regedit in the Start search box, and press Enter.

In Windows 7, click Start, type regedit in the Search programs and files box, and press Enter.

  • In the File menu, click Import.
  • Now locate and select the .reg file imported from the working computer.
  • Click Open.
  • Close Registry Editor.

Method 3. Flush your computer’s DNS

Step 1:  Click on Start Menu.

Step 2:  In the search box, type “cmd”.

Step 3:  Now right-click on search result Command Prompt and click on Run as administrator.

Step 4:  Once the Command Prompt window is open, type ipconfig/flushdns.

Step 5:  Now close Command Prompt.

Step 6: The check is the problem is resolved.

Method 4. Restart Microsoft Exchange System Attendant Service

Step 1:  Press Windows key +R to open the Run window. Now type msc and click Ok.

Step 2:  In the Services window, locate the Microsoft Exchange System Attendant service in the details pane.

Right-click the service and click Start. If it’s already started, stop it and re-start it.

If you were unable to restore your Outlook profile using any of the above methods. Remo Repair Outlook software shows you a few simple steps on how to recover Outlook profile.

Method 5. Repair Minor Corruptions in Outlook Profile using Scanpst.exe

If all of the above methods failed then there’s a high probability that your Outlook profile has gotten corrupt. Make use of scanpst.exe to fix the connection to Microsoft Exchange is unavailable on Outlook issue.

  • Locate the Scanpst.exe tool using the below path in your respective Outlook versions.
  • In Outlook 2019: C:\Program Files\Microsoft Office\root\Office16\
    In Outlook 2016: C:\Program Files\Microsoft Office\Office16
    In Outlook 2013: C:\Program Files\Microsoft Office\Office15
    In Outlook 2010: C:\Program Files\Microsoft Office\Office14
    In Outlook 2007: C:\Program Files (x86)\Microsoft Office\Office12Open Scanpst.exe tool and click on the Browse button to select corrupt Outlook Profile which you want to fix.
  • Click the Start button. And select Make a backup of scanned file before repairing option and click Repair option.

However, Scanpst.exe can only fix minor corruptions. If your profile is severely corrupt then you need a specialized tool to repair a corrupt Outlook Profile.

Remo Repair Outlook software is a go-to tool for thousands of Outlook users across the world when they have to repair corrupt Outlook profiles. The software keeps your Outlook file completely safe by first reading the file, extracting contents from it, and creating a new healthy file after fixing all issues. Remo Repair PST works on all versions of Outlook and it can also repair your password-protected or compressed PST file. If your PST file is damaged due to any reason, just click here to know how to fix a corrupt Outlook PST file.

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John Harris

Senior Editor, Content Analyst and a fan of exceptional customer service. John develops and publishes instructional and informational content regarding partition management, Windows hot-fixes, data management and computer troubleshooting.

As a tenured data recovery specialist, John shares exceptional insights and blog posts about data loss and data recovery across any storage device. With 8+ years’ experience in writing for Data Recovery for both Mac OS and Windows OS computers, he is an avid learner who always wants to polish and simplify the data recovery process. John passes his free time playing Chess and reading Science Fiction novels.

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