Outlook For Mac 2016 Attachment Size Limit

  1. A client is using Outlook for Mac version 15. There is an existing POP account, and I have created an IMAP account with the intent of moving the mail data to the server and removing the POP account. Most of the data has moved to the server, and these messages have begun popping up: 'The total attachment size exceeds the limit.
  2. Jan 10, 2019 Outlook for MAC (v16.20) 25mb File Attachment Size Limit The new version of Outlook for Mac won't let me attach a file larger than 25mb. I've always been able to do it in previous versions of Outlook for Mac.

Increase Mailbox Size Limit in Outlook 2007/2010/2013/2016; View Mailbox Size Limit in Outlook 2007/2010/2013/2016. Step 1: Open Mailbox Cleanup window. In Outlook 2007: Click on Tools from the Menu Bar and select Mailbox Cleanup in the drop-down. In Outlook 2010/2013/2016: click on File, go to Mailbox Cleanup section and tap on the down arrow.

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Original KB number: 3146087

Symptoms

You use Microsoft Outlook 2016 for Mac or Outlook for Mac 2011 to connect to a mailbox on a Microsoft Exchange server. When you send an email message that contains a large attachment, you receive the following error messages in Outlook for Mac.

Or, you receive a non-delivery report (NDR) in your Inbox like this one:

The message contains diagnostic information for administrators, such as the following:

Remove Server returned '500 5.2.11 RESOLVER.RST.SendSizeLimit.Sender; message too large for this sender'

Cause

This issue occurs when you send an email message that's larger than the Exchange Web Services (EWS) message size limit that's configured on the Exchange server.

Resolution

You can increase the message size limit on the Exchange server to allow for larger email messages to be sent from Outlook for Mac clients and other EWS clients. For more information, see the following TechNet articles as appropriate for your version of Exchange Server.

Exchange Server 2016 and 2013: Configure client-specific message size limits

Exchange Server 2010: Set message size limits for Exchange Web Services

More information

For more information about this issue, see the following article in the Microsoft Knowledge Base:

3107326 You can't send large attachments by using the EWS client

If your mailbox exceeds one or more size limits set by the administrator, emails cannot be sent or received. In this case, you have to increase Outlook mailbox size limit or erase the mailbox. To ease Outlook mailbox, you can see how to delete emails in Outlook. In this article, we aim to show you how to view and increase Outlook mailbox size limit.

View Mailbox Size Limit in Outlook 2007/2010/2013/2016

Step 1: Open Mailbox Cleanup window.

In Outlook 2007: Click on Tools from the Menu Bar and select Mailbox Cleanup in the drop-down.

Outlook For Mac 2016 Attachment Size Limit

In Outlook 2010/2013/2016: click on File, go to Mailbox Cleanup section and tap on the down arrow next to it.

Step 2: In the Mailbox Cleanup window, click on View Mailbox Size. When the Folder Size window popups, you can view mailbox size limit in Outlook.

Outlook For Mac 2016 Attachment Size Limit

Increase Mailbox Size Limit in Outlook 2007/2010/2013/2016

You can increase mailbox size limit in Outlook by change settings in Registry Editor.

Step 1: Press Windows + R key to invoke Run dialog box. Input regedit and Enter to open Registry Editor.

Step 2: In the left pane, expand My Computer. Navigate to the following directory.

For Outlook 2007: HKEY_CURRENT_USERSoftwarePoliciesMicrosoftOffice12.0OutlookPST

For Outlook 2010: HKEY_CURRENT_USERSoftwarePoliciesMicrosoftOffice14.0OutlookPST

Outlook For Mac 2016 Attachment Size Limits

For Outlook 2013: HKEY_CURRENT_USERSoftwarePoliciesMicrosoftOffice15.0OutlookPST

For Outlook 2016: HKEY_CURRENT_USERSoftwarePoliciesMicrosoftOffice16.0OutlookPST

Note: If you cannot find any folders above, right-click to create a new key and rename it.

Step 3: Find out four DWORD in the right filed as below:

  • MaxFileSize

  • WarnFileSize
  • MaxLargeFileSize
  • WarnLargeFileSize

Step 4: Right-click on each item above and select Modify.

Step 5: When the Edit DWORD (32-bit) Value window, input the value in the box under Value Data. Once you do not see any item on the list, go to the steps in the following.

Outlook For Mac 2016 Attachment Size Limit On Iphone

Note: The conversion between units list here:

Outlook For Mac 2016 Attachment Size Limit Is Exceeded

1GB=1*1024*1024*1024byte; 1MB=1*1024*1024byte; 1KB=1*1024byte.

Step 6: Right-click to create NewDWORD (32-bit) Value. Rename it as we have mentioned in Step 3. Repeat the Step 4 to Step 5. Close Registry Editor and launch your Outlook to check the changes affect or not.

Outlook For Mac 2016 Attachment Size Limit Gmail


Outlook For Mac 2016 Attachment Size Limit Size

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