Starting with Android 9 (API 28), cleartext (HTTP) is disabled by default. If your download URL starts with http:// instead of https:// , the DownloadManager will fail instantly. Move your files to an SSL-encrypted server.
Getting a "Download Unsuccessful" notification from the Android DownloadManager is a classic headache for both users and developers. It’s a vague error that doesn't tell you much, but it usually boils down to a few specific culprits. android downloadmanager download unsuccessful
int columnReason = cursor.getColumnIndex(DownloadManager.COLUMN_REASON); int reason = cursor.getInt(columnReason); switch (reason) { case DownloadManager.ERROR_INSUFFICIENT_SPACE: // Clear some room break; case DownloadManager.ERROR_HTTP_DATA_ERROR: // Check internet/server break; case DownloadManager.ERROR_CANNOT_RESUME: // Server doesn't support byte ranges break; } Use code with caution. 📉 Summary Checklist Clear "Download Manager" app data and check storage. Starting with Android 9 (API 28), cleartext (HTTP)
If you are seeing this error while trying to download a file from a browser or an app, try these steps in order: 1. Check Storage Space The most common cause is a full disk. Go to . Ensure you have at least 500MB to 1GB of free space. 📉 Summary Checklist Clear "Download Manager" app data
Sometimes system permissions for the downloader get revoked by mistake. Go to . Tap the menu (three dots) and select Reset app preferences . Restart your device and try the download again. 💻 Developer Guide: Why Your Code is Failing