Other PDF Issues

Fix Adobe Reader Send for Signature Could Not Send Error

Chanuka Geekiyanage Oct 23, 2026 869 views

Question details

The user is unable to send PDF documents for signature using Adobe services.

How to Fix the 'Could Not Send' Error in Adobe Send for Signature

Product: Adobe Reader
Device & OS: not provided
Scenario: Attempting to route a PDF document to recipients to collect their digital or electronic signatures.
Observed behavior: The signature request fails to process, and the application displays a 'Could not Send' error message on the screen.

Before you start

Verify that your internet connection is stable and that the PDF document you are trying to send is not excessively large, corrupted, or secured with restrictive password permissions.

Solution 1Recommended

Refresh Your Adobe Reader Login Session

Re-authenticating your Adobe ID resolves background synchronization bugs and temporary permission glitches causing the failure.

Often, background authentication tokens expire or become corrupted. Signing out and immediately signing back into the Adobe Reader application forces the software to fetch a fresh token from the Adobe authentication servers.

Sign out of the application

Open Adobe Reader, click on your profile icon in the top right corner, or navigate to the 'Help' menu and select 'Sign Out'.

Restart Adobe Reader

Close the Adobe Reader application completely and then relaunch it to ensure all background processes are cleared.

Sign back in

Click 'Sign In' and enter your correct Adobe ID credentials (email and password).

Attempt the send process again

Open your PDF document and try using the Send for Signature tool to see if the error is resolved.

Account Syncing: Refreshing your login ensures your desktop application is properly synced with Adobe Document Cloud servers.

Solution 2

Use the Acrobat Cloud Web Interface

Bypass the desktop application entirely and use the official web portal to isolate software-specific issues.

Powerful PDF Editor

Sign and Share PDFs Seamlessly with WPS Office

If you are experiencing continuous server sync issues with Adobe, WPS Office provides a robust, lightweight alternative to manage, sign, and share your PDF documents without the hassle of recurring server errors.

1. Open your PDF: Launch WPS Office and open the PDF document that needs to be signed or shared.
2. Access signature tools: Navigate to the 'PDF' tab on the top ribbon and select the 'Fill & Sign' or 'Sign' option.
3. Create your signature: Draw, type, or import an image of your signature and place it onto the appropriate document fields.
4. Share with recipients: Save your signed document, then click the 'Share' button to instantly email the file to your desired recipients.

Add electronic signatures to your documents quickly using local, intuitive toolsHighly compatible with all standard Adobe PDF document formatsEasily share finalized documents via email directly from the application interfaceLightweight software suite that avoids heavy background syncing processes

microsoft office alternative - wps office

Frequently Asked Questions

Why does Adobe keep saying 'Could not send' when requesting a signature?

This typically occurs due to an expired authentication session, local network connectivity problems, or temporary outages on Adobe's cloud servers. Resetting your login session is the most common fix.

Can I send documents for signature without using the desktop app?

Yes. You can completely bypass the desktop application by logging into the Adobe Document Cloud web interface and uploading your documents there to send for signature.

Are there file size limits that cause the sending process to fail?

Yes, Adobe enforces file size and page count limits on documents processed for e-signatures. If your PDF is exceptionally large or contains highly complex interactive fields, the transmission may time out and fail. Compressing the PDF can help.

PDF Troubleshooting