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Most Outlook users might be aware of the shared mailboxes and its uses. For unaware and new users, shared mailbox is a mailbox allowed in Outlook that can be accessible by more than 1 user with provided access permissions. They can collectively share and receive information via emails at a centralized mailbox platform. Some exclusive benefits of the shared mailbox are

• Synchronized working in team at a single place
• Centralized account for access, sending and sharing information
• Outlook calendar sharing facility for added users
• Offline working within the Exchange environment
• Sharing responsibilities, resolving and putting up enquiries

‘Download shared folders’ disabled. This can be done manually, or company wide with the Group Policy setting “Disable shared mail folder caching” found in User Configuration / Administrative Templates / Microsoft Outlook 2016 / Outlook Options / Delegates. Enabling this will disable and grey out the option as per the screenshot above. However, I was previously doing this through a. Opening a shared folder in Outlook 2016 for Windows. This guide explains how to open another person’s email folder which you have been given permission to access. Click on the File tab at the top-left hand side of the window making sure you are in the Info section. Now select Account Settings and then Account Settings again. On your Mac, choose Apple menu System Preferences, then click Sharing. Open Sharing preferences for me. Select the File Sharing checkbox. To select a specific folder to share, click the Add button at the bottom of the Shared Folders list, locate the folder, select it, then click Add. The Public folder of each user with an account on your Mac is shared automatically.

Outlook 2016 for Mac, Outlook for Mac for Office 365; In this article. Original KB number: 2743766. When you have access to multiple shared Calendar folders, you cannot open one or more of the shared Calendar folders in Outlook 2016 for Mac or Outlook for Mac 2011. Resolution: a user who shared this folder needs to grant you Folder Visible permission on all parent folders. Refer to this article for step by step instructions. Complete/full access. To open folder in Outlook 2007 and Outlook 2010/2013/2016/2019 (if there is no Autodiscover): Outlook 2010/2013/2016/2019. To remove another user's shared folder from your Folder pane, hold down Control, click the folder, and then click Remove Shared Account. See also Share an Exchange folder in Outlook 2016 for Mac (Linked article is actually titled Share a folder in an Exchange account, but this text is a better title for it). Outlook for Mac does not support Auto-mapping of shared mailboxes. A folder is shared with you If another user has shared an inbox, primary calendar folder, or primary contact folder with you, use this method to open the user's folder.

So, shared mailboxes have an important role in Outlook application and convenient for team work in any organization. But as there is always the chance of other Outlook errors, synchronization issue can develop any time while trying to access the shared mailbox by the authorized user. The symptoms including unable to access or receive the emails from the shared mailbox by a user or a message is sent but not received by the other user. Such conditions can halt the progress of work in between. This synchronization issue is common among Outlook 2010, Outlook 2013 and Outlook 2016 versions.

Recommended: Methods to Convert OST to PST File Manually

The user cannot claim any reason responsible for this synchronization issue with determination. That is why he takes help from the manual tricks in order to get rid or resolve this synchronization issue in shared mailbox. Let us discuss what all tricks the Outlook user can try on this scenario.

Native Methods to resolve shared mailbox synchronization issue

Try disconnecting and reconnecting shared mailbox

Basic and first task

Close your Outlook application and perform this action with the following steps:

1. Press Windows+R, type Control Panel to open Control Panel.
2. Here, click on Mail.
3. The Mail Setup window will get open. Click on Email accounts option.
4. In Email accounts page, select your Outlook profile and click on Change option.
5. On the next Server settings page, click on More options.
   
6. Select Advanced tab, then select your shared mailbox and click on Remove option.
   
7. Finally, click OK. The shared mailbox will get disconnect.
8. To reconnect the shared mailbox, repeat steps from 1 to 6 and then from Advanced tab, select your shared mailbox and click Add to connect it again.

See, if performing this action has resolved the issue.

Cached Exchange Mode Settings

Basic, Second trick

Disable cached mode, restart Outlook, Enable cached mode

Perform the following steps for this action:

1. Start Outlook application. Go to File>Account Settings>Account Settings.
2. Select your Exchange account and click on Change option.
3. On Server Settings page, click on More Settings option.
4. Click on Advanced tab, then under Cached Exchange Mode Settings section, clear the checkbox Use Cached Exchange Mode and click on OK. This has disabled the Cached Exchange Mode.
5. Now close the Outlook application and then restart it.
6. Repeat the steps from 1 to 4. On fourth step, select the checkbox Use Cached Exchange Mode and click on OK.
   
7. Check within the shared mailbox, if the synchronization issue is resolved.

Note: Please ensure that the two options Download shared Folders and Public folders favorites are enable under the Cached Exchange Mode Settings section in Advanced tab.

Manual Synchronization

Third trick – Synchronize Offline Folders

Use the below given steps to perform manual synchronization of the OST folders.

1. Go to the Outlook OST mailbox (connected with Exchange Server) and right-click on the shared mailbox folder. Then click on Properties option
2. On the Properties dialog box, click on Clear Offline Items option. Then click on OK
3. Now, go to the Send/Receive tab on the Outlook menu bar and then click on Update Folder option
4. Wait until the synchronization process gets completed
5. Sometimes this manual synchronization works

Renaming/Rebuilding Exchange OST File

Fourth trick – OST file corrupted, try renaming it

Change the OST file name with these steps:

1. Go to the path location for your OST file.
   C:Users<username>AppDataLocalMicrosoftOutlook
2. Then, select your OST file, right click on it and select Rename option.
3. Now change the name without changing the file extension.
4. Start Outlook application again and see if the synchronization works.

Linking Shared Mailbox to new Outlook Profile

Fifth Trick – Profile may be corrupted, create new and link mailbox

First create a new Outlook profile using these steps.

1. Go to Mail option in the Control Panel and click on it.
2. Next, click on Show Profiles tab on the Mail Setup dialog box.
3. To add a new Outlook profile, click on Add option.
4. Next, provide a name to the new profile and click on OK.
5. Select the option “Always use this profile” and click OK.
6. Now, click on Next on the Auto Account Set up page and finally click on Finish option.
7. The new profile is created.

Now, we would head on to add and link the shared mailbox to this new Outlook profile.

1. Launch the Outlook application and navigate to File>Account Settings>Account Settings.
2. Choose the newly created Outlook profile account and click on Change option.
3. On the next page, click on More Settings option on the bottom right.
4. On the Microsoft Exchange dialog box, switch to the Advanced tab and under Mailboxes section, click on Add option.
   
5. Next, type the exact email address of the shared mailbox of the account and click on OK.
6. The shared mailbox will get configured or added to the Outlook application and can be viewed on its interface on the left panel.

Professional Outlook OST Repair Tool

Final solution, best in worst situations

If you are not getting any help from the manual tricks in resolving the issue, then the suggestion for pursuing repair software is obvious. Outlook OST Repair tool deals with all the Outlook errors including the synchronization issue. It repairs any level of corruption in Outlook OST file and can make synchronization of shared mailbox work again. With a very simple GUI and smart programming, it delivers the output instantly with preserving the data to the best. It saves the selective data from the recovered OST file to PST and more other file formats. The outstanding tool supports all Outlook and Exchange Server versions. The tool is available for free as demo version on the software website. Get it from there and try it once. Keep in touch for more such helpful contents.

Conclusion

Outlook Shared Folder Not Showing

Shared mailboxes synchronization in Outlook can go down or stop working due to issue in the OST files, connection- go-wrong, cached settings, etc. We focused on each loop hole and provided the remedy solution for it. A final way to cope up the situation (professional tool) is also delivered when rest of the ways proved failure.

Original KB number: 2743766

Symptoms

When you have access to multiple shared Calendar folders, you cannot open one or more of the shared Calendar folders in Outlook 2016 for Mac or Outlook for Mac 2011.

Cause

In Outlook 2016 for Mac and Outlook for Mac 2011, you cannot open a shared Calendar folder that is not a subcalendar of the user's shared default Calendar folder.

For example, a user shares the following Calendar folders with you:

• Calendar
• Second Calendar
• Third Calendar

In this example, the Second Calendar folder is a subcalendar of the user's shared default Calendar folder. Therefore, you can open the Second Calendar folder in Outlook for Mac. However, the Third Calendar folder is not a subcalendar under the default Calendar folder. Therefore, you cannot open this folder in Outlook for Mac.

Resolution

Share Outlook Folder With Another User

To resolve this issue, have the calendar owner create all shared calendars under the default Calendar folder.