Fix MAPI Failure When Emailing a PDF from Word (Without Outlook)
Question details
The user encounters a MAPI failure error when attempting to send a Word document as a PDF via email.
- Product
- Microsoft Word (Office Home and Student 2019)
- Device & OS
- Windows
- Scenario
- Trying to use the 'Send as PDF' email feature in Microsoft Word while relying on the default Windows Mail app, as Microsoft Outlook is not installed.
- Observed behavior
- Word displays a MAPI failure and an unspecified error because the Windows Mail app is not a MAPI-compliant email client, preventing the automatic attachment of the PDF.
Ensure you have saved your current Word document locally on your computer to prevent any data loss before testing different email methods.
Manually Save and Attach the PDF in the Mail App
Since the default Windows Mail app does not support MAPI, you can bypass the error by saving the document as a PDF locally and attaching it manually.
The built-in 'Share' or 'Email as PDF' features in Microsoft Office require a MAPI-compliant email client to function. The Windows 10/11 Mail app lacks this capability, which triggers the error.
In Microsoft Word, click on 'File', select 'Save As', choose a location on your computer, and select 'PDF (*.pdf)' from the 'Save as type' dropdown menu.
Launch the Windows Mail app or your preferred non-MAPI email client from the Start menu.
Click the 'New message' button to start drafting your email, and fill in the recipient details.
Click the 'Insert' tab or the paperclip icon at the top of the email window, select 'Files', navigate to where you saved your PDF, and attach it to the email.
Install and Configure a MAPI-Compatible Email Client
If you frequently use Word's built-in email features, installing a third-party MAPI-compliant email client will permanently resolve the error.
Experience Seamless Document Sharing with WPS Office
Avoid frustrating protocol errors and complex configurations. WPS Office provides a lightweight, comprehensive suite that seamlessly creates, edits, and shares PDFs without heavy dependencies. Enjoy high compatibility with Microsoft Word formats absolutely free.
- 1. Download WPS Office: Visit the official website to download the free WPS Office suite for Windows.
- 2. Install and Launch: Run the lightweight installer and open the WPS Writer application.
- 3. Open and Share: Directly open your existing .docx files in WPS Writer and use the intuitive export tools to quickly share your work as PDFs.
Frequently Asked Questions
What does MAPI failure mean in Microsoft Word?
A MAPI (Messaging Application Programming Interface) failure occurs when Word tries to hand off a document to an email client, but the default email app on your computer does not support this protocol. The Windows Mail app is notably non-MAPI compliant.
Can I force the Windows Mail app to send Word documents automatically?
No, the default Windows Mail app fundamentally lacks MAPI support, which is strictly required for Word's built-in 'Share' or 'Email' functions. You must manually save the document and attach it to a new email in the Mail app instead.
Which free email clients are MAPI-compliant?
Mozilla Thunderbird is one of the most popular free, MAPI-compliant email clients available. Setting it as your default Windows email app will allow Word's 'Email as PDF' feature to function properly without purchasing Microsoft Outlook.
How do I change my default email client in Windows to fix this error?
Go to Windows Settings > Apps > Default apps. Click on the 'Email' section and select your preferred MAPI-compliant email client (like Outlook or Thunderbird) from the list of installed applications.
