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Volume 23 Issue 6

Slipstick Systems

Issue Date: March 1, 2018 « Previous Issue | Next Issue »

The following articles were included in our Exchange Messaging Outlook (EMO) newsletter published on March 1, 2018.

EMO is a weekly publication. To receive your own copy of EMO by email, subscribe here.

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Today's Highlights:

  • Disable Notifications for Some Accounts
  • Select Attachment & Send Message
  • Maximum Attachment Size

Disable Notifications for Some Accounts

A user had a problem:

I have several email accounts. One account receives a lot of email that does not require my immediate attention. Is there a way to turn off the notifications for this account? This account receives hundreds of emails daily and the constant notifications are distracting.

You can't disable notification for one account only, but you can disable notifications in Options then create rules to display notifications for the specific accounts you want notifications for.

In Outlook for Windows, turn off global notification in File, Options, Mail by unticking Display a Desktop Alert. If you have Play a sound or Show an envelope in the taskbar enabled, you can turn those off too.

Next, create a rule for the accounts you want to receive a notification for. Open the Rule and Alerts dialog, click New click and choose Apply rule on messages I send and click Next twice to apply the rule to all messages sent to this account. Choose Display a Desktop Alert (and play a sound, if desired), click Next again and complete the rule. Repeat for the steps for each email account you want alerts on.

The steps for Outlook for Mac are similar. Turn off global notifications in Outlook Preferences then create a rule (in the Tools menu) for each account you want to be notified on.

Select Attachment & Send Message

A user found an obscure bug in Outlook:

When you use Send To > Mail recipient or insert an attachment into a message before adding the address, and select a name from autocomplete that is over the attachment, you can send the message just by pressing S.

Well, it takes a little more than just clicking on the autocomplete entry that is over the attachment – you need to double click on it. This selects the address on the first click, adding it to the To field, and the second click selects the underlying attachment. Then when you start to add a recipient whose name begins with S, as soon as you type S, you’ll send the message.

If you don’t double click on the address, you won’t have a problem, although if you tab out of the To field and stop on the attachment, S will send the message too.

This is obviously a bug – selecting an attachment and pressing S shouldn’t send the message.

The workaround is easy: if you use a mouse to select entries from the autocomplete list, use a single click or select the address using the arrow keys.

Maximum Attachment Size

An Outlook 2016 user had a problem sending large attachments:

When I attach several image files to an email in Outlook I get message "The file you're attaching is bigger than the server allows. Try putting the file in a shared location and sending a link instead." Previous versions of Outlook would instead offer to resize the images.

Outlook 2016 has the resize images dialog on the message's File tab after the images are attached.

But that is only half of the problem. The error message is saying that the message is too large and the mail server won’t accept the message. However, while Outlook knows the message size limits for Exchange accounts, it can’t query a SMTP server for its limits and uses a default of 20MB. So even if your mail server supports larger attachments, Outlook will refuse to send the message.

You can change the default limit in Outlook to the actual limit of your SMTP server by editing the registry. To over ride the default, add the MaximumAttachmentSize value to the registry.

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Preferences
DWORD: MaximumAttachmentSize
Decimal Value: 50000 (for approx. 50MB)

For more information and ready-to-use reg files, visit

Outlook's Default Attachment Size

New & Updated Exchange KB Articles

“Could not load type” error when you try to create an Exchange Connector in System Center Service Manager 2016
https://support.microsoft.com/kb/4089862

Can't send an email message when Full Access permission is granted to a shared mailbox in Exchange Server
https://support.microsoft.com/kb/3045224

Emails sent from on-premises to Exchange Online appears to be external after running HCW
https://support.microsoft.com/kb/4052493

Email messages sent to a Dynamic Distribution Group are not delivered to all recipients
https://support.microsoft.com/kb/4090655

Error VSS_E_WRITERERROR_RETRYABLE when backing up a passive database copy in an Exchange DAG
https://support.microsoft.com/kb/4037535

Exchange Server guidance to protect against speculative execution side-channel vulnerabilities
https://support.microsoft.com/kb/4074871

Hybrid free/busy lookups fail between Exchange Server 2016 CU8 and O365
https://support.microsoft.com/kb/4058297

Only a subset of items are synchronized in shared mailboxes or public folders in Outlook 2016
https://support.microsoft.com/kb/3140747

Unexpected Archive folder appears in Outlook after installing Exchange Server 2016 CU7
https://support.microsoft.com/kb/4057368

Update Rollup 19 for Exchange Server 2010 Service Pack 3
https://support.microsoft.com/kb/4035162

You can't access OWA or ECP after you install Exchange Server 2016 CU6
https://support.microsoft.com/kb/4036163

New & Updated Office 365 KB Articles

A user is missing from a group in Azure AD Connect for Office 365 dedicated/ITAR (vNext)
https://support.microsoft.com/kb/4052041

A user’s Office 365 email address unexpectedly contains an underscore character after directory synchronization
https://support.microsoft.com/kb/2001616

"Your encrypted message couldn't be opened" error when external users try to open encrypted messages
https://support.microsoft.com/kb/4057302

February 23, 2018, update for Office Online Server 2016 (KB4011024)
https://support.microsoft.com/kb/4011024

Validation errors for a mailbox archive GUID for Office 365 dedicated/ITAR (vNext) users
https://support.microsoft.com/kb/4053483

How to identify DirSync or Azure AD Connect provisioning errors in Office 365 dedicated/ITAR (vNext)
https://support.microsoft.com/kb/4040885

Hybrid free/busy lookups fail between Exchange Server 2016 CU8 and O365
https://support.microsoft.com/kb/4058297

Litigation hold user can still access mailbox after license removed in Office 365 dedicated/ITAR (vNext)
https://support.microsoft.com/kb/4040138

Mailbox is present in both Office 365 Legacy Dedicated and vNext after license is applied
https://support.microsoft.com/kb/3202607

Mailbox not provisioned in Azure AD Connect for Office 365 dedicated/ITAR (vNext)
https://support.microsoft.com/kb/4051375

Office 365 reports show anonymous user names instead of actual user names
https://support.microsoft.com/kb/4090039

Overview of delegation in an Office 365 hybrid environment
https://support.microsoft.com/kb/3064053

New & Updated Outlook KB Articles

"The name on the security certificate is invalid or does not match the name of the site" error in Outlook in a dedicated or ITAR Office 365 environment
https://support.microsoft.com/kb/2772058/

Various attachment-save scenarios do not work as expected in Outlook 2016
https://support.microsoft.com/kb/4090818

Can't send an email message when Full Access permission is granted to a shared mailbox in Exchange Server
https://support.microsoft.com/kb/3045224

You can't sign in after you update to Office 2016 build 16.0.7967 or a later version on Windows 10
https://support.microsoft.com/kb/4025962

How to troubleshoot issues that cause Outlook to crash or stop responding when used with Office 365
https://support.microsoft.com/kb/2413813

Only a subset of items are synchronized in shared mailboxes or public folders in Outlook 2016
https://support.microsoft.com/kb/3140747

Unexpected Archive folder appears in Outlook after installing Exchange Server 2016 CU7
https://support.microsoft.com/kb/4057368

Other Resources

Calendars aren’t printing in color
When printing to any printer device results in blank and white calendars, the problem may be because the Print Options are set to print in gray scale.

Set a reminder on selected items in the To-Do List
Use a macro to set the reminder time on selected items in the task or to-do list.

Update Contact Area Codes
Use a macro to update the area code on Outlook Contacts.

FREE Microsoft eBooks
Microsoft's Eric Ligman is giving away a bunch of free eBooks, reference guides, Step-By-Step Guides, and other informational resources for Microsoft products, including Windows 10, Office 365, Office 2016, Power BI, Azure, Windows 8.1, Office 2013, SharePoint 2016, SharePoint 2013, Dynamics CRM, PowerShell, Exchange Server, System Center, Cloud, SQL Server, and more.

Volume 23 Issue 6 was last modified: September 29th, 2021 by Diane Poremsky

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For new Outlook for Windows: Fixes or workarounds for recent issues in new Outlook for Windows .

Outlook for Mac Recent issues: Fixes or workarounds for recent issues in Outlook for Mac

Outlook.com Recent issues: Fixes or workarounds for recent issues on Outlook.com

Office Update History

Update history for supported Office versions is at Update history for Office

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Other Microsoft 365 applications and services




New Outlook Articles

Opt out of Microsoft 365 Companion Apps

Mail Templates in Outlook for Windows (and Web)

Urban legend: Microsoft Deletes Old Outlook.com Messages

Buttons in the New Message Notifications

Move Deleted Items to Another Folder Automatically

Open Outlook Templates using PowerShell

Count and List Folders in Classic Outlook

Google Workspace and Outlook with POP Mail

Import EML Files into New Outlook

Opening PST files in New Outlook

Newest Code Samples

Open Outlook Templates using PowerShell

Count and List Folders in Classic Outlook

Insert Word Document into Email using VBA

Warn Before Deleting a Contact

Use PowerShell to Delete Attachments

Remove RE:, FWD:, and Other Prefixes from Subject Line

Change the Mailing Address Using PowerShell

Categorize @Mentioned Messages

Send an Email When You Open Outlook

Delete Old Calendar Events using VBA

Repair PST

Convert an OST to PST

Repair damaged PST file

Repair large PST File

Remove password from PST

Merge Two Data Files

Sync & Share Outlook Data

  • Share Calendar & Contacts
  • Synchronize two computers
  • Sync Calendar and Contacts Using Outlook.com
  • Sync Outlook & Android Devices
  • Sync Google Calendar with Outlook
  • Access Folders in Other Users Mailboxes

Diane Poremsky [Outlook MVP]

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