Verify that your eBook vendor hasn't reached its "download limit" for that specific title.
Network instability or restricted Wi-Fi (like at a library or office) Step-by-Step Troubleshooting adobe digital editions unable to download
Verify Clock and Date SettingsADE is incredibly sensitive to time. If your computer’s clock is even a few minutes off from the server's time, the DRM license will reject the download for "security reasons." Ensure your time, date, and time zone are set to "Automatic." Summary Checklist for Success Delete the old .acsm file and download a new one. Ensure your Adobe ID is active and correctly logged in. Verify that your eBook vendor hasn't reached its
Clear Your Browser CacheSometimes your browser holds onto a "bad" version of the .acsm link. Clear your browser's history and cache. Return to the bookstore or library site. Download a fresh copy of the .acsm file. Ensure your Adobe ID is active and correctly logged in