Fix Cannot Send a PDF as an Email Attachment After Acrobat Update
Question details
The user is unable to send a PDF document directly as an email attachment using the built-in feature after installing a software update.

- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Attempting to use the 'Send File' or 'Send as Attachment' function to quickly email a PDF document.
- Observed behavior
- The feature fails to attach the PDF to the default email client, or an error message interrupts the workflow.
Ensure that your default email application (such as Microsoft Outlook or Windows Mail) is properly installed, logged in, and set as the default mail client in your operating system settings.
Verify Email Account Preferences
Software updates can sometimes reset default settings, preventing the application from identifying your default email client.
Reconfiguring the email account directly within the application's preferences often restores the connection between the PDF software and your email client.
Launch your PDF application and navigate to Edit > Preferences from the top menu bar.
In the Preferences dialog box, look at the left sidebar and select the Email Accounts category.
Check if your preferred email application is listed and marked as default. If it is missing, click the Add Account button to reconfigure it, then restart the application.

Repair or Update the Installation
A corrupted update patch or missing system file might be blocking the application from communicating with your email client.
Manually Attach the PDF
A reliable workaround to send your documents immediately while troubleshooting the built-in attachment feature.
Send PDFs Effortlessly with WPS Office
Avoid update glitches and email integration errors by using WPS Office. WPS provides a powerful, built-in PDF reader and editor that lets you securely manage, edit, and email your PDF documents directly with a single click.
- 1. Open your PDF in WPS Office: Launch WPS Office and open the PDF file you wish to send.
- 2. Click the Share button: Navigate to the top toolbar and click on the 'Share' or 'Email' icon.
- 3. Select Email Attachment: Choose the option to send as an email attachment. WPS will automatically open your default mail client with the PDF attached.

Frequently Asked Questions
Why does my PDF not attach to emails after updating?
Software updates can sometimes reset default application preferences or disrupt the registry keys that allow your PDF reader to communicate with your default email client.
How do I set my default email client in Windows?
Go to Windows Settings > Apps > Default apps. Look for the Email section and select your preferred application, such as Outlook or Mail, to ensure other programs can use it to send attachments.
Does the version of Microsoft Office affect PDF email features?
Yes, if you are using an older or mismatched bit-version (e.g., 32-bit Office with a 64-bit PDF application), it can cause integration failures when trying to send attachments.
What should I do if the 'Send File' button is greyed out?
A greyed-out button usually indicates that no default email account is configured in the application preferences or that your IT administrator has restricted the feature. Check your email account settings within the PDF software.




