# Troubleshooting - mCaptcha

# Troubleshooting

Solutions to common problems.

## Q: I just setup an instance but I am unable to login#

mCaptcha by default is configured to server at `localhost` hostname. If the instance is deployed at another hostname, please try setting `MCAPTCHA_SERVER_DOMAIN` environment variable to the hostname at which your instance is deployed or setting the equivalent in config.toml:

    1[server]
    2domain=mydomain

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