Receiving "The private key length must be 2048 bits in length" Error when Creating a Custom Domain
Jun 5, 2025
Administration
Okta Classic Engine
Okta Identity Engine
Overview
When setting up a Custom Domain in Okta, after pasting the generated Private Key in the corresponding field, Admins may encounter the error message:
The private key length should be 2048 bits
Applies To
- Custom Domain
- Private Key
Cause
Solution
Generate the Private Key again from the DNS Provider using the PEM Key format.
