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Outlook not sending emails in Windows 10

While Microsoft Outlook is a superb electronic mail shopper, it comes with its personal set of issues. One such problem is when the customers are unable to ship emails in Windows with or with out attachments. Many mixtures might trigger the issue, however there may be one test you could be sure to are conscious of the attachment measurement provided by the Email Service you’re utilizing with Outlook. That mentioned, on this put up, we are going to present a number of methods to resolve the issue when Outlook is just not sending emails in Windows 10 whether or not you might have an attachment, or not.

Outlook not sending emails in Windows 10

One of the widespread situations is that emails don’t work in Outlook, however they work on different gadgets, together with smartphones. It might be engaged on a unique PC, however not on one of many PCs. These are a couple of methods you may pay attention to isolating the issue.

  1. Repair Outlook Profile
  2. Turn off the “Work offline” mode
  3. Increase Outlook Attachment Size
  4. Check Mailbox Settings
  5. Check Add-ins
  6. Turn of Antivirus Email Integration
  7. Zip Files earlier than sending
  8. Blocked Files

Make certain to test if the issue was resolved after making an attempt the listed answer.

1] Repair Outlook Profile

Repair Email Account in Outlook

  • Open Microsoft Outlook and click on on the File tab.
  • Under Info, click on on Account Settings, after which click on on account settings from the flyout menu.
  • Select the account which has the problem after which click on on the Repair button.
  • The Repair Account field will open. Check your settings and fields after which click on Next.

2] Turn off the “Work offline” mode

Disable Work Offline In Outlook

Outlook provides an Offline mode, which lets you undergo your emails with out getting distracted. In this mode, whilst you can draft the emails, they are going to be out there within the Outbox. If that’s the case, then any electronic mail you attempt to ship, with or with out attachment, will probably be sitting within the Outbox till you disable it. Open Outlook, after which swap to the Send/Recieve part. Click on Work Offline mode to disable it.

Read: Outlook.com is just not receiving or sending emails.

3] Increase Outlook Attachment Size

Outlook normally restricts attachment, which is closed to the utmost allowed measurement. So in case your Email service provides 25MB of attachment measurement, Outlook will prohibit any attachment, which exceeds 20 MB. Thankfully, you may enhance the dimensions by hacking the Registry. Once the Registry Editor is open, navigate to the next path relying on the model of your Office.

Outlook 2019 and 2016:


Outlook 2013:


Outlook 2010:


increase outlook attachment size

Under Preferences, create a brand new DWORD with the title MostAttachmentSize. If it’s not there, then right-click and create it. Next double click on on the DWORD and swap to Decimal. Set the worth as 25600 (25.6MB)Registry Registry and begin Outlook once more. The attachment shouldn’t be a difficulty anymore.

4] Check Mailbox Settings

You should test the Mailbox settings for the e-mail account that’s inflicting the problem. Open Account Settings, and choose the e-mail account that wants a repair. Then click on on the change button, and you’ll have choices to test Mail settings, Reset Mail Settings, and so forth. Use a kind of choices to repair the issue.

Read: Windows 10 Mail app not sending or receiving emails.

5] Disable Com Add-ins

At instances, Com Add-ins, i.e., third-party plugins for Outlook, could cause points, particularly if they’re associated to attachments.  However, earlier than making an attempt to disable, be certain that to open Outlook in secure mode (Type outlook.exe /secure within the run immediate) and test if Outlook is working as anticipated. If every part is working as anticipated, then you may select to disable the plugins one after the other and discover out which was inflicting the issue.

Outlook Com Add-ins

  • Open Outlook, and click on on File > Options > Add-ins
  • Under Manage choose COM Add-ins, after which click on on Go Options, which is subsequent to Manage.
  • Uncheck them one after the other and see disabling which plugin resolves the issue.

6] Turn off Antivirus Email Integration

Many Antivirus and Security options combine with Email shoppers and scan for any outgoing and revenue attachment. If you’re utilizing any such service, it might be a good suggestion to disable them and test whether it is working as anticipated. If that’s the drawback, you’ll have to configure the settings to regulate it.

7] Zip Files earlier than sending

Lastly, in case your file is critical, chances are you’ll need to zip the file on the pc earlier than attaching it to Outlook. Windows provides to archive as an important characteristic. Right-click on any file or folder and choose Send To from the menu. Then select the Compress folder, and it’ll create a zipper file of that folder or file, which will probably be of smaller measurement. You ought to then have the ability to connect it and ship it throughout.  It is, after all, relevant solely inc case the place you don’t bale to ship an attachment due to the dimensions of the information.

8] Blocked Files

There are set of extensions or file varieties which are blocked by Outlook from importing or sending as an attachment. You can higher rename or use on-line storage to share these information as a substitute of importing them immediately.

I hope the put up was straightforward to comply with, and also you have been in a position to ship emails utilizing Outlook in Windows, each with and with out attachments.

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