Microsoft Outlook Calendar Not Syncing Fix with 15 Ways

  Mark Regan
Mark Regan
Published: March 26th, 2026 • 8 Min Read

Microsoft Outlook Calendar not Syncing

You are also missing updates because Microsoft Outlook Calendar is not syncing. Looking for an all-in-one sync solution to fix the Outlook calendar not syncing error across devices and connected applications with Outlook. Then, you must read this blog post, we are solving the Microsoft Outlook sync issue in classic Outlook, New Outlook, Microsoft Teams, iPhone, Android, and lastly on Mac.

The methods we are going to use to fix this problem require technical knowledge, patience, and are prone to human errors. Instead using of manual solutions, the professional takes a smart, risk-free, and secure all-in-one automatic solution to get rid of. The automatic offline solution safely and instantly fixes the Outlook calendar syncing issue within a few clicks.

But if you want to use a manual solution to fix Outlook calendar sync error, then you can go with the described solutions in the upcoming sections and get ready to face issue arises due to using all of them. The freeways do not guarantee data integrity, do not work in some situations, and sometimes create unexpected new issues for you. To resolve Outlook Calendar not Syncing with New Outlook, follow the instruction which will be described in all the solutions.

Solve Microsoft Outlook Calendar Not Syncing Issue Across Devices

Basically, to fix the Outlook calendar sync problem manually, we are covering all the possible ways to solve the Outlook calendar not syncing issue across the platform and devices. So, whether you want a solution for your Android phone, iPhone, Mac, Windows, or want a solution to fix this for Microsoft Teams. You can do all of these areas by following the given instructions inside all the solutions.

1st Solution: Outlook Calendar Not Syncing Windows 11/10

If you are a Windows user and you want a solution for your classic Outlook application, then you can do so in 4 ways. Check all the methods to fix Outlook calendar not syncing.

First Way: Use of Account Reconfiguration

  1. Open Outlook on your Windows Operating System.
  2. Then, go to “File” menu, click on “Account Settings,” and choose “Account Settings” from it.
  3. Select the account that has the issue and click on “Remove” button.
  4. After that, close the Outlook application and restart it after a few minutes.
  5. Now again, click on “File” and click on “Add Account” button.
  6. Enter the same email address in the blank space, along with password.
  7. Finally, click on “Continue” button to complete the reconfiguration.

Second Way: Update Outlook Application

  1. Go to “File” menu and click on “Office Account.”
  2. Then, click on “Update Option” and choose “Update Now” button.
  3. Done, wait till the updates are completed.

Third Way: Use ScanPST.exe

  1. Close the running Outlook Application.
  2. Find the ScanPST.exe tool in the location below on your Windows.
    C:\Program Files\Microsoft Office\root\OfficeXX\
  3. Open the ScanPST.exe tool and click “Browse” button.
  4. Then, navigate PST/OST file of Outlook and click “Open” button to open it.
  5. After that, click on “Start” button to begin the scanning process.
  6. Finally, click on “Repair” button to fix all major and minor issues.
  7. Done, restart your Outlook normally, and you will see that your Outlook calendar not syncing error is fixed.

Fourth Way: Repair Outlook From Control Panel

  1. Open Control Panel on your computer.
  2. Click on “Programs” and choose “Programs and Features” option.
  3. Then, scroll to locate “Microsoft Office” and click “Change” button.
  4. After that, choose “Repair Type” between “Quick Repair” and “Online Repair.”
  5. Finally, click on “Repair” button to start repairing Outlook.
  6. Done! Once the repair process is complete, your Outlook starts working normally.

2nd Solution: Fix Outlook Calendar Not Syncing with New Outlook

Using New Outlook and facing the same issue on it, then follow the given instructions

  1. Open New Outlook on your Windows OS.
  2. Click “File,” choose “Account Info,” and select “Your Accounts.”
  3. Then, hit “Manage” button, scroll down, and click on “Remove” to remove account.
  4. After that, click on “Add Account” button from “File”, and “Account Info” option.
  5. Enter your Email Address and click Connect.
  6. Next, type your Password and authentication details.
  7. Finally, click Done or Next to complete the sync successfully.
  8. Done, your Outlook calendar not syncing issue is solved.

3rd Solution: Resolve Microsoft Outlook Calendar Not Syncing Android

Facing the issue on your Android device, then follow these steps:

  1. Open the Microsoft Outlook app on your Android phone.
  2. Tap on Profile Icon, choose Mail Accounts, and select the account you want to remove.
  3. Now click on Remove Account button to remove it from Android device.
  4. After that, click on Settings, choose Add Account, and tap on Add Email Account option.
  5. Re-enter your ID and Password and complete the two-factor authentication.

4th Solution: Short Microsoft Outlook Calendar Not Syncing with iPhone

  1. Open Outlook App on your Apple iPhone.
  2. Tap on “Profile Icon,” select “Accounts,” and click on the “Account” showing on screen.
  3. Then, scroll down till the last and click on Remove Account button to remove.
  4. After that, close the app from your recently used apps.
  5. Restart the app on your iPhone device, and tap on “Add Account” button.
  6. Then, enter your “ID” & “Password” and configure all the required settings on it.
  7. Finally, wait for successful configuration and sync.
  8. Done! Your account will start working normally.

5th Solution: Solve Outlook Calendar Not Syncing with Microsoft Teams

If you are facing syncing issue with the Teams application, you can fix this in five ways. Check all the ways listed below.

First Way:  Restart Applications

  1. Close both Teams and Outlook application completely.
  2. Then, reopen both of them and check “Calendar” sync.
  3. Done!

Second Way: Enable Calendar

  1. Open Microsoft Teams on your Windows or Mac OS.
  2. Click on “Calendar” tab and hit on “Apps” icon.
  3. After that, search for “Calendar”; if not available, add it to the calendar.

Third Way: Check Calendar Settings

  1. Open Microsoft Outlook on your desktop PC.
  2. Go to “File,” choose “Options,” and click on “Calendar.”
  3. Now, check that all default calendar settings are selected correctly.
  4. Done!

Fourth Way: Clear Cache

  1. Close Microsoft Teams application properly.
  2. Now, press “Windows + R,” and enter the given run command:
    %appdata%\Microsoft\Teams
  3. After that, delete files from this folder to clear cache.
  4. Finally, restart Teams and sign in with your account.

Fifth Way: Reconfigure Account on Teams

  1. Open Teams on your laptop computer.
  2. Then, click on “File,” choose “Account Settings,” and hit the “Remove” button.
  3. After that, restart your Teams application and “Add again.”
  4. Finally, refreshes Teams to sync completely.
  5. Done! After reconfiguring your Outlook calendar not syncing issue is solved.

6th Solution: Correct Microsoft Outlook Calendar Not Syncing on Mac

You can solve syncing issue of Microsoft Outlook calendar on Mac in two ways: using update and reconfiguring.

First Way: Update Outlook on Mac

  1. Launch Outlook application on Mac computer.
  2. Go to “Help” menu, click on “Help” option.
  3. Then, click button “Check for Updates,” and if the update is available, click on “Update.”
  4. Done!

Second Way: Account Reconfiguration on Mac

  1. Open Outlook application on MacBook.
  2. Go to “Preferences” menu, & click “Accounts.”
  3. Now, select the “Account” you want to reconfigure.
  4. Then, click on “Minus” icon at the bottom to remove the Account
  5. After that, close Outlook application completely and restart it normally.
  6. Next, click “Plus” icon and choose “New Account” option.
  7. Now, enter “Email Address” and click “Continue.”
  8. Enter “Password” & complete authentication.
  9. Finally, wait to “Add Account” again completely.
  10. Once the account is successfully added, your Outlook calendar not syncing issue is resolved.

Why Users Should Avoid Manual Solutions?

The listed manual solutions create serious issues, such as using the reconfiguration multiple times leads account corruption, requires proper internet connection, technical knowledge, time-consuming, and any mistakes in any step of the solution will delete the account. Secondly, these solutions do not have any live support, due to which you cannot reach out to anyone in some major problems.

How to Fix Microsoft Outlook Calendar Not Syncing Automatically

To avoid all the limitations of manual solutions and their steps, professionals choose an automatic solution for hassle-free repair. You can also try BitRecover Outlook Toolkit application for a secure, easy, and quick solution. This is the only tool that fixes your Outlook, and it fixes all issues within a few clicks, without disturbing the data integrity, while maintaining the folder structure of your Outlook folders.

Final Verdict

In this guide, we shared 15 major best possible techniques to fix Microsoft Outlook calendar not syncing issue, with detailed steps. Every manual solution explains to users how they can resolve Outlook calendar not syncing error across the platform and devices. We also found some unavoidable limitations that users must know before using any of them for their devices and platform, such as account corruption, time-consuming, requires an internet connection, and technical knowledge. Due to this, the manual solutions often fail, but if the users can use the automatic way, they can safely and quickly rescue their Outlook calendar sync.


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