PDF Security & Access Issues

How to Fix Adobe Acrobat Cannot Send a PDF for Signature Error

Chanuka Geekiyanage Oct 23, 2026 868 views

Question details

The user is unable to send a PDF document to another person for an electronic signature due to a system error.

How to Fix "Cannot Send a PDF for Signature" in Adobe Acrobat

Product: Adobe Acrobat / Adobe Document Cloud
Device & OS: not provided
Scenario: Attempting to route a PDF document to a recipient for an electronic signature through the Adobe application.
Observed behavior: An error message appears during the sending process, preventing the PDF document from being successfully delivered to the recipient.

Before you start

Ensure your computer has an active internet connection and that your Adobe Document Cloud subscription is currently active, as expired or logged-out sessions can restrict electronic signature features.

Solution 1Recommended

Verify Document Integrity and Recipient Details

Rule out file corruption and routing errors by testing the process with a different file and confirming the recipient's email address.

Often, the inability to send a document stems from a formatting issue within the specific PDF file or a typo in the recipient's contact information. Isolating the issue helps determine if the software itself is failing.

Test with a different PDF

Create or open a completely new, blank PDF document. Attempt to send this new file for signature to the same recipient to see if the issue is isolated to your original file.

Validate email addresses

Carefully review every email address entered in the recipient list. Ensure there are no typos, extra spaces, or invalid characters.

Check Acrobat version

If the problem affects all files, go to 'Help' > 'About Adobe Acrobat' to check your version. Outdated software may have compatibility issues with the cloud service.

Verify Document Integrity and Recipient Details

Document Specific Issues: If the test document sends successfully, your original PDF may be corrupted, heavily encrypted, or have security restrictions preventing it from being routed for signatures.

Solution 2

Test the Online Document Cloud Service

Use the web version of Adobe Document Cloud to determine if the issue is specific to your desktop application.

Alternative PDF Signature Tool

Easily Sign and Share PDFs with WPS Office

Skip the hassle of complex cloud routing and unexpected software errors. WPS Office provides a streamlined PDF editor where you can easily add electronic signatures, fill forms, and share your documents directly. It serves as a lightweight, highly compatible alternative for handling professional PDF tasks.

1. Open your PDF in WPS Office: Launch WPS Office and open the PDF document you need to sign or share.
2. Navigate to the Fill & Sign tool: Click on the 'Protect' or 'Fill & Sign' tab located in the top ribbon menu.
3. Create your electronic signature: Click on 'PDF Signature' to type, draw, or insert an image of your signature.
4. Apply the signature: Place the signature at the desired location in your document and adjust its size if necessary.
5. Share the signed document: Save your changes and use the built-in 'Share' button to instantly send the signed PDF via email or a secure link.

Quickly insert and manage electronic signatures in PDF files.Fully compatible with standard Adobe PDF formats.Lightweight and user-friendly interface for seamless document sharing.Cost-effective solution with robust PDF reading, editing, and annotation tools.

microsoft office alternative - wps office

Frequently Asked Questions

Why is my PDF locked from adding a signature?

The document might have security restrictions applied by the original author. You will need the owner's permission or the specific permissions password to unlock the document for signing or modifying.

Can the file size prevent a PDF from being sent for signature?

Yes. If your PDF exceeds the maximum file size limit supported by your email provider or your Document Cloud subscription plan, the sending process will fail. Try compressing the PDF using a PDF optimizer tool before sending.

How do I know if the signature request email bounced?

You will typically receive an automated 'undeliverable' or 'delivery failed' email in your inbox if the recipient's email address is invalid, misspelled, or if their receiving inbox is full.

Can I use WPS Office to sign documents sent to me?

Yes, WPS Office has a built-in PDF Signature feature that allows you to open standard PDF documents, easily insert your own visual electronic signature, save the file, and return it to the sender.

PDF Troubleshooting