# 🔧 Troubleshooting

Fixes for stuck uploads, failed downloads, missing previews, sync problems on the Mac app, and sign-in issues.

- [Trouble downloading or previewing files](/content/help/troubleshooting/trouble-downloading-previewing/index.html)  
What to check when a Brault preview won't load, a download won't start, or a download stalls partway: browser blockers, processing delays, and format support.

- [My upload is stuck](/content/help/troubleshooting/upload-stuck/index.html)  
What to check when a Brault upload stalls or restarts: connection drops, the 2 GB free-plan size cap, network switches, and browser interference.

Can't find it? [Contact us](/content/help/contact/index.html).