What's an X.509 certificate?
Updated Dec 18, 2024
The information in this article applies to all Dropbox users.
An X.509 certificate is needed to authenticate your identity and keep your data safe.
It usually comes from your identity provider and can come in a variety of formats. Dropbox only accepts .pem, .cer, or .crt.
The image to the right is a sample of an encoded certificate.
If your team members are seeing an error when trying to use single-sign on to log in, you may need to update your X.509 certificate. Learn how.
