> ## Documentation Index
> Fetch the complete documentation index at: https://docs.flextable.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Troubleshooting

> Fixes for common connection errors and issues, plus where to get help.

## Cannot connect

Most connection problems come from the host, credentials, or transport. Use **Test** in the connection form to see the exact error.

<AccordionGroup>
  <Accordion title="Connection timed out or host unreachable">
    Check the host and port, and that the database is reachable from your machine (firewall, VPN, security group). If the database is behind a bastion, use an [SSH tunnel](/secure-connections#ssh-tunnel).
  </Accordion>

  <Accordion title="Authentication failed">
    Verify the username and password, the target database, and the auth method. On Amazon RDS you can use [IAM authentication](/secure-connections#aws-rds-iam-authentication) instead of a static password. For Redis 6+, remember the username can be blank with ACLs.
  </Accordion>

  <Accordion title="SSL / TLS errors">
    Match the SSL mode to your server. Managed and cloud databases usually need `verify-full` with a CA certificate. See [Secure connections](/secure-connections#ssl--tls).
  </Accordion>
</AccordionGroup>

## Updates

If an update fails to apply, relaunch FlexTable and let it check again, or reinstall the latest build from the [download page](https://flextable.dev/download).

## Get help

Report a bug or ask a question on [GitHub](https://github.com/flex-table/flextable/issues), or use the in-app feedback dialog.