Is your Outlook creating winmail.dat attachments with every email you send? Believe it or not, this is a very common problem and here’s how to fix it! To stop Outlook from sending winmail.dat attachments, set your new emails to compose in HTML or Plain Text format. I too have been struggling with this problem. Using Outlook 365 ProPlus Version 1708 (Build 8431.2215) on an HP Envy laptop. Many of the recommended solutions revolve around finding the 'fly in the ointment' or the app, add-in, etc. That is sparking the behavior. In the meantime, each attachment should still open as expected in other Office apps but if you would like to still preview files in Outlook there is a workaround available. There is a similar issue with HTML files that the workaround below will not work for, in that case you still need to open the file in the browser directly to view it. Don't see your problem with Office products listed below? Share it in the comments, or post the question to our email administration user forum on ITKnowledgeExchange. The Admin App sign-in failure. The Office 365 Admin App connects to Office 365 for IT admins to view the service health dashboard and verify maintenance statuses from. At first someone noticed the problem with a migrated shared mailbox. So I created a new shared mailbox in Office365, but with the same result. We did find out that when you switch off 'The New Outlook', the problem is gone. So it has something to do with 'The New Outlook' I didn't try your Powershell command yet.
How to solve problems with attachments in Outlook in Windows 10
If you’re having an issue with attaching a file in Outlook Windows 10, there’s no need to worry. Here’s how you can resolve your problem.
- Check to see if you’re sending a file that Outlook thinks is unsafe. If so, attach it as a compressed or zipped folder
- See if you’re using the Rich Text Format. And switch it to HTML or Plaintext
Applies to All Windows 10 Versions
Inserting attachments is a key part of emailing in Outlook. But, sometimes, not everything might go as planned. You might not be able to attach a file to Outlook at all, or attachments might not show up in the body of emails, or as you intended. In this guide, we’ll help you solve some common problems with attachments in Outlook, and help stop the fretting.
Outlook says that files my are unsafe, or that the file is too big
One of the most common problems with attachments in Outlook is that it might block file types that it thinks are unsafe. Or, the file size might be too big. This is because Outlook blocks certain file types that it thinks might spread computer viruses. And, also because Outlook has a size limit for files. You can work your way around this by zipping the file and then attaching it. Here’s how.
- Head to where the file you want to attach is located
- Right-click on the file and choose to Send to compressed (zipped) folder
- Head back into Outlook and attach and send the new zipped folder instead
Some file types that are blocked by Outlook include .ade, .adp, .app. .bat, .com, .jar, .inf, and .ops. The full list is available here. If you’re unable to zip, or if the file type is still too big, you can always upload the file to the cloud, and then share the link instead.
My attachments show up in the message body and not below the subject line
If your attachments are showing up in the body of a message and not below the subject line, then, the issue is because of the file type of the email you’re sending. If you’re replying to or using the Rich Text format for your email, all attachments will show up in the body of the message. Here’s how you can switch the format of all outbound emails back to HTML or Plaintext.
- Head to the File tab on Outlook
- Choose Options and then click Mail
- Under Compose Messages look for the Compose messages in this format option
- Choose HTML or Plain Text
Switching emails to HTML format
When composing your email, you can look out for what format the email is by looking at the title bar of Outlook. You’ll typically see the subject of the message, along with (Rich Text) or (HTML.) Keep an eye out, to avoid having errors with attachments
I can’t insert Pictures into my email and switching individual emails into HTML or Rich Text formats
Finally, if you can’t insert pictures using the Insert tab in the Outlook ribbon, then again, you’re probably using the wrong format of email. You only can insert pictures info emails when using the HTML or Rich Text formats. Follow the steps above to switch the email format, or you can follow the steps below to switch an individual message into HTML or Rich Text formats.
- Click Reply, Reply All, or Forward in the message
- If you’re working from the Reading Pane, click Pop Out
- Click the Format Text ribbon on the top
- Choose HTML or Rich Text under where it says Format
Resolving the issue where you can’t send pictures with the insert button
Did these solve your problems?
Did these solutions to common problems with Outlook attachments solve your problems? If so, feel free to let us know in the comments below. Also, feel free to check out our other Outlook themed guides. We’ve explained our tips and tricks for attaching files in Outlook, and have detailed how you can set up and manage your email accounts in Outlook in Office 365.
Share This Post:
-->These known issues provide information about non-security updates that are included in Monthly Channel, Semi-Annual Channel (Targeted), and Semi-Annual Channel updates in 2019 for Microsoft 365 Apps for enterprise, Microsoft 365 Apps for business, and the subscription versions of the desktop apps for Project and Visio.
Note
- This list is not comprehensive.
- If you are experiencing an issue in a channel other than the channel shown as resolved, you can expect resolution soon. Learn more
- Resolved issues are documented in their respective channel pages as well.
Office 365 Outlook Attachment Problems Today
Last Updated November 12, 2019
![365 365](https://storage.googleapis.com/support-forums-api/attachment/thread-19768405-13087530196839671066.png)
Excel
- Check box controls could shrink when using autofit to adjust row height
Investigating: Monthly, SACT - Performance issue with Asynchronous User-Defined Functions that was causing them to be run Synchronously.
Resolved: SACT Version 1908 (11929.20436) - Users could be prevented from saving in Office 365 Excel Workbook format
Resolved: SACT Version 1908 (11929.20436) - Issue with slow performance on clicking on the Font Color button when a file has extensive conditional formatting.
Resolved: SACT Version 1908 (11929.20436) - Significant improvements to the performance of deleting columns with merged cells
Investigating: SACT
Resolved: Monthly Version 1910 (12130.20272) - Incorrect results when converting report filters along with the rest of the PivotTable for queries to SQL tabular servers.
Investigating: Monthly - Fix to correct colors used in previews when inserting charts using chart templates
Resolved: Monthly Version 1910 (12130.20272), SACT Version 1908 (11929.20436) - Identified an issue in inserting files as object from OneDrive.
Resolved: Monthly Version 1910 (12130.20272) - Identified an issue where workbooks created in earlier versions of Office could cause Excel to hang when opened in current versions of Office.
Resolved: Monthly Version 1910 (12130.20272), SACT Version 1908 (11929.20436), SAC Version 1902 (11328.20468)Wintv 24 Digit Serial Number 24 digit wintv serial number - All Products Currently Supported by WinTV v7.x Worldwide (All HVR,NOVA and PVR Products) Started by gaz1971, 09 11 AM. A keygen is made available through crack groups for free download. In your search for help with lost serial keys, you've probably come across software cracking tools, keygen programs or maybe even lists of free key. Wintv 24 digit serial number. All retail software uses a serial number or key of some form. The installation often requires the user to enter a valid serial number to proceed. A serial can also be referred to as a 'CD Key'. When you search for 24 Digit Number Wintv 7.2 Serial for example, you may find the word 'serial' amongst the results. Installation on multiple computers: the WinTV application can be installed on as many PCs as needed as long as you use the same Hauppauge device. We link the serial number of your TV tuner (sometimes it's the MAC address) with the Activation code. So as long as you use the same Hauppauge device, you can install on more than one computer. - Identified an issue that was causing delays in displaying typed values after deleting a range.
Resolved: SAC Version 1902 (11328.20468) - Identified an issue where selecting a cell after scrolling could result in the wrong cell being selected.
Investigating: SACT
Resolved: Monthly Version 1910 (12130.20272) - Identified an issue which could have caused scatter line charts from rendering properly when changing the series collection.
Resolved: Monthly Version 1910 (12130.20272), SACT Version 1908 (11929.20300)
Outlook
- Identified an issue that caused some users to see duplicate special folders created when adding a secondary Exchange account.
Resolved: Monthly Version 1910 (12130.20272), SACT Version 1908 (11929.20436) - Identified an issue which could have resulted in a memory leak.
Resolved: Monthly Version 1910 (12130.20272), SACT Version 1908 (11929.20388), SAC Version 1902 (11328.20468) - Addresses an issue that caused some users to see duplicate special folders created when adding a secondary Exchange account.
Resolved: Monthly Version 1910 (12130.20272), SACT Version 1908 (11929.20436) - Identified an issue which could sometimes result in a crash when a user receives a 'Missed Conversation' message from Skype.
Resolved: Monthly Version 1910 (12130.20272) - Identified an issue that caused Users to receive a generic 'operation failed' error when opening an attachment on a machine where DisableBGSave is enabled.
Resolved: Monthly Version 1910 (12130.20272) - Identified an issue with the links of cid: images (Outlook email-based images) were not able to be broken.
Resolved: SACT Version 1908 (11929.20436) - Identified an issue which could have caused an incorrect error message when attempting to send s/MIME encrypted e-mail.
Resolved: Monthly Version 1910 (12130.20272)
PowerPoint
- Some katakana characters may display incorrectly in a vertical text box.
Investigating: Monthly - Identified an issue which prevented hyperlink from being created when pasting text with hyperlink.
Resolved: Monthly Version 1910 (12130.20272) - Identified an issue which could cause TextRanges to become broken after pasting text into the header/footer/slide number placeholders on slide master and slide layout.
Resolved: Monthly Version 1910 (12130.20272) - Identified a perf issue on Win7 where the insert shapes gallery from the ribbon in all apps took approximately 4 seconds to appear.
Resolved: Monthly Version 1910 (12130.20272), SACT Version 1908 (11929.20396), SAC Version 1902 (11328.20468)
Project
- An assignment with zero work on a task, the task may be unable to be marked complete and will always show up at 99%.
Investigating: Monthly
Resolved: SACT Version 1908 (11929.20436) - Overallocations are not resolved by leveling
Investigating: MonthlyBarbie®, style icon and beauty expert, struts into the app-mosphere with this exciting nail design application – putting her beauty inspiration right at your fingertips! Barbie® Doll’d Up Nails™ for the Windows Phone lets you create trendy nail art designs just like salon professionals! Choose from countless patterns and stylish graphics. Barbie Doll'd Up Nails Printer Driver is a software program developed by Mattel. The most common release is 3.0.0.1, with over 98% of all installations currently using this version. The setup package generally installs about 44 files and is usually about 38.24 MB (40,096,576 bytes). Relative to the overall usage of users who have this installed on their PCs, most are running Windows 7 (SP1) and Windows 10. Barbie nail printer software download. Barbie Doll'd Up Nails for the Windows Phone lets you create trendy nail art designs just like salon professionals. Choose from countless patterns and stylish graphics. Feb 02, 2017 Barbie Doll'd Up Nails Printer Driver A guide to uninstall Barbie Doll'd Up Nails Printer Driver from your computer Barbie Doll'd Up Nails Printer Driver is a Windows program. Read below about how to remove it from your computer. The Windows version was created by Mattel. You can read more on Mattel or check for application updates here. Dec 10, 2019 Barbie Doll'd Up Nails Printer Driver.The most popular versions of this product among our users are: 1.0, 2.0 and 3.0. The product will soon be reviewed by our informers. - Identified an issue where users could get several messages when opening a read-only project.
Resolved: Monthly Version 1910 (12130.20344), SACT Version 1908 (11929.20436)
Word
- Searching from the Navigation pane may fail
Investigating: Monthly - Identified an issue in inserting files as object from OneDrive.
Resolved: Monthly Version 1910 (12130.20272)
Office Suite
![Office 365 outlook attachment problems today Office 365 outlook attachment problems today](https://www.slipstick.com/images/2011/10/icloud-icon.jpg)
- Attempting to save a file to a disconnected network share may result in issuesInvestigating: Monthly
Note
Office 365 Outlook Sign In Email
If you need help with an issue with using Office, we recommend that you post your question on Microsoft's Answers forum or Tech Community, or you can contact support.