This guide covers troubleshooting steps for resolving build and timeout issues when using Duplicator on 1&1 (1and1.com) hosting.
Build Processing Settings
- Go to Duplicator » Settings » Backups.
- Set Archive Engine to ZipArchive.

- Also, under Duplicator » Settings » Backups, change Max Worker Time to 10.

- Rebuild the backup and exclude large/unnecessary files (e.g., backups from other plugins).
Troubleshooting Timeout Issues
Finally, you may also want to check out this guide for more details on troubleshooting timeout issues using both Duplicator Pro and Duplicator Lite.
That’s it! By following these steps, you can resolve most build and timeout issues when using Duplicator on 1&1 (1and1.com).
If you are looking for a way to solve migration issues, check out our guide: “How to resolve WordPress migration issues?“