Other PDF Issues

How to Fix Cannot Add Files for Sending in Adobe Send

Elise Williams Oct 22, 2026 868 views

Question details

The user is unable to add or upload files to the Adobe Send service for sharing.

How to Fix Cannot Add Files for Sending in Adobe Send

Product: Adobe Send / Adobe Acrobat
Device & OS: not provided
Scenario: Attempting to attach, upload, or add files to send them via Adobe's document sharing service.
Observed behavior: The file upload process fails, hangs, or blocks the user from adding files without providing a clear initial error message.

Before you start

Before troubleshooting, ensure your internet connection is stable and verify that the file you are trying to upload is not currently open or locked by another application on your computer.

Solution 1Recommended

Verify File Size and Format Compatibility

Adobe Send has specific limitations on file sizes and supported formats. Checking these first resolves most upload issues.

Upload failures frequently occur when a file exceeds your account's maximum size limit or is in an unsupported format. Pinpointing the exact file attributes helps determine the necessary fix.

Check file size

Right-click the file you want to send and select 'Properties' (Windows) or 'Get Info' (Mac) to view its total size.

Verify against account limits

Ensure the file size does not exceed your Adobe account's limit (typically 100MB for free users or up to 2GB for premium Acrobat subscribers).

Check file format

Confirm that the document is a supported format, such as PDF, DOCX, or JPG. Exe files and unsupported archives will be blocked.

Verify File Size and Format Compatibility

Compress Large Files: If your PDF file is too large, use a PDF compression tool to reduce the file size before attempting to upload it to Adobe Send again.

Solution 2

Clear Browser Cache or Update the App

Corrupted temporary data in your browser or an outdated Adobe Acrobat desktop application can cause Adobe Send features to malfunction.

Free Microsoft Office alternative

Use WPS Office to Edit, Compress, and Share PDFs Easily

If Adobe Send continues to fail, try WPS Office. It provides powerful PDF tools, allowing you to edit, compress, and share your documents seamlessly through a lightweight and familiar interface.

1. Open your PDF: Launch WPS Office and open the PDF document you wish to share.
2. Access sharing options: Click the 'Share' button located in the top right corner of the application interface.
3. Create a link or send: Choose to generate a shareable cloud link or send the file directly as an email attachment.

Easily compress large PDFs to bypass strict file size sharing limits.Share documents directly via email or cloud links within the application.Fully compatible with Adobe PDF and Microsoft Office formats (Word, Excel, PowerPoint).Lightweight software with a familiar, user-friendly interface for seamless migration.

microsoft office alternative - wps office

Frequently Asked Questions

Why does my Adobe Send upload get stuck at 0%?

Uploads typically freeze at 0% due to a dropped internet connection, restrictive firewall settings, or a browser extension (like an ad-blocker) interfering with the upload script. Try temporarily disabling your browser extensions or switching to an incognito window.

What is the maximum file size for Adobe Send?

For free Adobe Document Cloud accounts, the file size limit is usually 100MB per file. Users with premium Adobe Acrobat Pro subscriptions can upload and send files up to 2GB in size.

Does Adobe Send support non-PDF file formats?

Yes, Adobe Send supports various file types including Microsoft Office documents (Word, Excel, PowerPoint) and standard image formats. In many cases, it can automatically convert these formats to PDF during the sending process.

PDF Troubleshooting