A download that reaches the end but cannot complete may have a local storage problem. Before changing network settings, read the transfer state and the log: a file-write error needs a different response from waiting for a source.
Check both the Temporary and Incoming drives
Find the configured Temporary path and the final Incoming destination, including any category-specific location. Check free space on each actual volume. Space on the system drive does not help a full external disk, and spare space in Temp does not establish that the final destination can accept the file.
This distinction matters when the two folders are on separate disks or partitions. Make enough room for the intended final file and for other work the computer is doing. Do not try to diagnose the limit from a rounded percentage alone.
Do not use the active Temp folder as a cleanup target
The numbered files in the Temporary directory represent unfinished downloads. Removing them to free space can discard progress. Use ordinary storage tools to identify expendable material elsewhere, or plan a backed-up move of the download folders.
The apparent size of a part file is also not a simple measure of useful data received. Allocation and sparse-file behaviour affect storage use. Keep the original data intact while determining which volume actually needs attention.
Verify the path and ability to write
Confirm that the destination folder exists and that the expected removable or network drive is connected. A stale drive letter can make a valid-looking path point nowhere useful. Check whether the current Windows account can create a harmless test file in the intended folder, then remove that test file.
If the account cannot write there, address the folder's intended permissions or choose a suitable writable destination. Running the whole client as administrator is not a substitute for understanding why the selected location is inaccessible.
Read the specific error instead of resetting everything
Official troubleshooting distinguishes problems opening a part file from problems finishing or moving a file. Note the full path in the error and whether another application may be using it. A disconnected device, read-only file or conflicting access requires a different check from insufficient free space.
Keep security software enabled. If it reports a detection, review that report before treating the action as an accidental lock or adding an exclusion. A security warning is information about the file, not just an obstacle to completion.
Review disk-space preferences with care
eMule has documented checks for free space and a minimum-free-space setting in Extended preferences. Read what your installed build exposes and note the current value before changing it. Behaviour described for very old Windows releases should not be copied blindly into a current setup.
After making space or fixing a path, resume the affected transfer if needed and observe one completion attempt. Repeatedly restarting or disabling a space check cannot create more capacity on the destination drive.
Keep completion and recovery separate
Do not manually rename an incomplete .part file just because it is large or the progress display looks nearly finished. If entries vanished after a crash, preserve the folder and use the missing-download recovery guide. For a planned storage move, use the backup and migration checklist.
Sources and further reading
- Official troubleshooting: file-operation errors
- Official FAQ: completed downloads and disk space
- Official help: extended disk-space settings
Project help includes older interface examples. Check the labels and options in your installed build before changing a setting.