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Utilization of Outlook for Mac enables smooth Exchange connectivity in a Mac environment while operating offline. Compatibility of Exchange with Mac streamlines flexibility of saving files in rigid formats like PDF, you just need to checkout methods for How to Save Outlook Emails as PDF on MAC. Synchronization between the Exchange server and client application (Outlook for Mac) is done so that whenever there is any modification on one side (the Server-side or client-side), the change gets updated on the other side. Sometimes, this Outlook for Mac to Exchange synchronization process gets affected partially or fully due to errors, improper configurations, or OLM file corruption. Due to these damages, updates in mailboxes on the server-side or the client-side regularly fails that’s why, and it becomes necessary to fix Mac mail not syncing with Exchange server issue quickly.

Reasons Behind OLM to Exchange Synchronization Issues

Unable to access your Outlook data in Mac? then you might be facing synchronization errors within your OLM to Exchange. To avoid experiencing this type of Outlook to Mac connection issue, so we need to realize its causes. Some of them have been stated below:

  • Offline mode: When you use Outlook for Mac in offline mode, it won’t sync with Exchange and therefore result in synchronization issues.
  • Connection failure: Network or server related issues like slow or unstable connections, outdated passwords or outdated macOS might make the initial connection to the Exchange Server difficult.
  • Cache issue: Corrupted Outlook caches may lead to Mac mail not syncing with Exchange problems, therefore delete or recreate cache, as recommended by some experts.
  • Incorrect settings: Incorrectly configured settings like date and time, server address, etc. may create such sync problems. Check the settings & make necessary adjustments to resolve the problem (discussed below in detail).

Now, as you know the main reasons behind the issue, we will provide you with some ways to get out of this Mac mail not syncing with Exchange issue.

Methods to fix Exchange synchronization issues in Outlook for Mac

  1. Check Offline Mode
  2. It is the most basic check that you can perform before pursuing any other method. Go to the Outlook menu and check if the Work Offline option is selected or not. If selected, unselect it and check if the synchronization is better now.

    Check if the Work Offline option is selected or not

  3. Rebuild the Outlook for Mac File
    To fix this issue, you should perform the troubleshooting as explained here.
    Firstly, close all the Outlook for Mac-related processes currently running on the system. Now, take a backup of the Identities folder of Outlook for Mac in C drive. Then, click on the Outlook application with the Alt key on hold to start the Microsoft Database Utility app. Here, selects the identity you want to recreate and click on the Rebuild option to create it. Wait until the process gets completed.
  4. Clear cache data
    This method works when any specific folder is not synchronizing, but the rest of the Exchange folders synchronize with Outlook. Find the solution to fix below:
    First, ensure that there is a secure connection between Outlook for Mac and Exchange Server. Right-click on the respective Exchange folder, which is not synchronizing, and click on the Properties option. Now, switch to the General tab and click on the option Empty Cache option. Next, check if the folder is synchronized and if new items are received in it or not.Switch to the general tab and click on the option Empty Cache
  5. Confirm exchange connectivity
    The issue can be due to an error in connection of Outlook with the correct Exchange Server. You should check it once to confirm if this is the issue by following this process given below:
    Go to Tools > Accountsin your Outlook for Mac and check over the Exchange Account. If there is an orange indicator against the added Exchange account, it means there is some issue. You can try disconnecting it and re-configuring it. Try connecting it with Outlook on the web and check the status of the Exchange Server now, if everything is fine, connect to the desired server again.Confirm Exchange Connectivity
  6. Outlook for Mac update
    If you’re encountering the Outlook for Mac not syncing with the Exchange Server issue, critical updates might be missing. To update Outlook for Mac, go through the steps below.

    • Access Outlook and go to the Help menu. Then, click on Check for Updates.
    • As the Microsoft Auto Update window comes, choose the Automatically option. You can also select the time frame for your update cycle under the Check for Updates section.
    • Lastly, click on the option Check for Updates option. You can now download and install the latest updates easily.
  7. Reindex the Outlook for Mac app
    The following steps will assist you in fixing Outlook for Mac not syncing with the Exchange Server.

    • Shut down all running applications.
    • Click on the Outlook icon in the launcher and the Outlook Index tool will appear.
    • Click on the Reindex option while selecting the database.
    • Launch the terminal once the Reindex process has finished. Then run the following commands one by one.

    sudo mdutil -E /
    sudo mdutil -i on /

  8. Restart the Sync Services Agent
    Restarting the Sync Services Agent is one of the best & probably the easiest ways to fix the Outlook for Mac not syncing with the Exchange Server issue. Follow the steps below to get through this process easily.

    • Shut down Outlook for Mac.
    • Now, go to Applications and click on Utilities
    • Next, select the option Activity Monitor.
    • Go to the tab Process Name & click on Sync Services Agent.
    • Choose the process and click on the Quit option
    • Lastly, exit the Activity Monitor & access your Outlook for Mac application once again to check whether this issue is fixed or not.

The above methods are easy and can solve the synchronization issue between Outlook for Mac and Exchange Server. You can give these solutions a try and get rid of that unwanted situation quickly. But what if the Outlook files have become inaccessible? First, you can think of rebuilding the Office database using MS Database Utility. It is usually available at its default location /Applications/Microsoft Office 2011/Office/. You can rebuild the database using this utility by clicking the identity of the database you want to rebuild. If this also doesn’t work for you, you need to retrieve inaccessible Outlook for Mac data using a professional tool.

How to retrieve inaccessible Outlook for Mac Data?

If you are still not able to fix the issue with your Outlook for Mac data file, you can think of converting the OLM file to PST and recovering its data. For this, we suggests the most promising OLM Converter tool– Kernel for OLM to PST Converter tool, which converts OLM files to Outlook 2019, 2016 & 2013. It also allows users to make secure migrations from OLM to Exchange Server and the cloud-based platform of Office 365. The tool provides many filter options for users to move only specific data to the destination. Also, it provides complete support to all Outlook for Mac versions, including Outlook 2016 for Mac. The tool provides the easiest way to retrieve the inaccessible Outlook for Mac data.

You may better understand the OLM to PST conversion process by going through the steps of the tool.

  1. Run OLM to Outlook PST tool and use the Browse or Search  (for automatic search in the selected system drive) option to add the desired number of OLM files for conversion purposes. Click on the Next.Run OLM to Outlook PST Converter tool
  2. After scanning the files, select any mailbox item and view its preview. Now, click on the Save option.Select mailbox for its preview
    Note 1: You can save file items in multiple formats by right-clicking and selecting the required option.
    Note 2: With the Find option on the Toolbar, you can perform a deep search for any mailbox item using multiple filters and options.Perform deep search to find mailbox
  3. Choose PST File (MS Outlook) option. click on the Next.Choose PST file option
  4. Add filters like email metadata (From, To, Subject), Item Type, and Date Range as required and click Next.Add filter option
  5. To manage the converted PST file size, you can use the Split option and can add a prefix to the store name.
    Select split option to manage large PST file
  6. Browse and add the saving path location for the converted PST file and click Finish.Browse the saving location
  7. The conversion process will get started and soon be completed with a confirmation message.
    So, conversion of OLM file to PST file is quite handy with the OLM to Outlook PST converter software. You can now access these PST files in Outlook.


Workflow affected due to the Mac mail not syncing with Exchange issue can lead to massive loss as you will be unable to find crucial mails. There can be several causes behind this issue such as Outlook for Mac users may not have the updated information in their mailboxes. We have provided an important factor about the error & effective solution above including by checking offline mode, rebuilding the Outlook for Mac file, clearing Cache in Outlook, confirming Exchange connectivity, etc. However, if all these methods fail to fix the issue, they you utilize the above suggested automated tool for simple & quick resolution. This tool supports all Outlook for Mac versions too. All in all, such dependable and easy solutions make sure that users have their updated mails and can access their Mac Mail contents in the Outlook account.

Q- What is Exchangesyncd on Mac?

A- The Exchangesynced on Mac is an Apple process for easy syncing with Exchange servers for mail, notes, contacts, reminders, calendar data , etc.

Q- How to check if Outlook is connected to the Exchange server on Mac?

A- 1- From the Tools menu, select Accounts.
2- Seeing the Exchange account in the left side pane. If there is any issue with the connection, the indicator icon will be in orange color.

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