# concurrent.futures.TimeoutError

- **ID:** `python/concurrent-futures-timeouterror`
- **Domain:** python
- **Category:** system_error
- **Verification:** official
- **Fix Rate:** 80%

## Root Cause

Future did not complete within the given timeout.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 3.x | active | — | — |