MT5 · Runtime errors
MT5 5001 · More than 64 files cannot be opened at the same time | YI GOLD
ERR_TOO_MANY_FILES
Official meaning
More than 64 files cannot be opened at the same time
Possible causes · YI GOLD suggestions
Paths, access modes, formats, handles or permissions do not meet requirements.
Troubleshooting · YI GOLD suggestions
Check permitted terminal sandbox paths, names, access flags, formats and handles. Record open failures without granting permissive directory access.