How to Fix Acrobat Reader 64-Bit Mailto Submit Form Error
Question details
Users are trying to submit PDF form data via an email client but are encountering a resolution error specific to the 64-bit version of the software.
- Product
- Adobe Acrobat Reader
- Device & OS
- Windows 10
- Scenario
- Clicking a PDF form button configured with a 'Submit a Form' action using a mailto: URL.
- Observed behavior
- The 64-bit Acrobat Reader fails to process the action and returns the error 'One of the specified recipients is not resolvable', whereas the 32-bit version processes it successfully.
Verify that your default email client is properly configured in your Windows 10 settings and ensure you have installed the latest patch for Acrobat Reader, as Adobe occasionally releases fixes for known architecture bugs.
Submit Form Data via HTTPS Server Endpoint
Since the mailto submission method is prone to client-side architecture errors, switching to a web-based server endpoint ensures reliable data collection across all software versions.
Relying on local email clients to handle PDF form data is generally discouraged due to inconsistent support across different PDF readers and operating systems. Submitting to an HTTPS endpoint ensures a direct, secure transfer of the form data.
Open your PDF form in Adobe Acrobat Pro and select 'Prepare Form' from the tools menu to enter editing mode.
Right-click the Submit button on your form and select 'Properties' from the context menu.
Navigate to the 'Actions' tab. If there is an existing 'Submit a form' action, select it and click 'Edit'. Otherwise, choose 'Submit a form' from the 'Select Action' dropdown and click 'Add'.
In the 'Submit Form Selections' dialog box, replace the mailto: link with a secure HTTPS URL (e.g., https://yourdomain.com/form-handler) pointing to your web server.
Choose your preferred export format (such as HTML or FDF), click 'OK', and save the PDF file.
Use a Go To URL Action as a Workaround
If you only need to trigger an email draft to a specific address and do not strictly require automatic form data extraction, you can replace the Submit action with a URL action.
Revert to the 32-Bit Version of Acrobat Reader
Because this error is isolated to the 64-bit architecture on Windows, uninstalling it and installing the 32-bit version will temporarily restore the mailto functionality.
Manage PDFs Seamlessly with WPS Office
Avoid architecture-specific bugs and performance issues by using WPS Office. It provides a lightweight, highly compatible environment for viewing, editing, and managing PDF documents alongside standard Word, Excel, and PowerPoint files in one unified workspace.
- 1. Download and Install: Visit the official WPS Office website to download and install the free software suite.
- 2. Open Your PDF: Launch WPS Office, click on 'Open' on the home screen, and select your PDF document.
- 3. Manage Documents: Use the integrated PDF tools to read, fill, annotate, and save your documents seamlessly without external dependencies.
Frequently Asked Questions
Why does the mailto link work in 32-bit but not 64-bit Acrobat Reader?
This is a known compatibility bug in the 64-bit architecture of Adobe Acrobat Reader affecting how it communicates with the Windows MAPI to resolve email recipients during the 'Submit a Form' action.
Can I still collect form data if the mailto submit action fails?
Yes, you can configure the PDF form's submit action to send data to a secure HTTPS server endpoint, or use professional e-signature services like Adobe Acrobat Sign as a more reliable alternative.
Does the 'Go To URL' action send the filled form data?
No. Using a mailto link with a 'Go To URL' or 'Open a web link' action only opens a blank email draft directed to the recipient. It does not automatically attach the filled PDF form or extract its field data.
