Windows app error 400 on secure connection [Solved]

Installation Issues
1

Hi everyone,

I open this topic to give a solution to a problem I solved yesterday.

I use the latest version of Windows app 1.3.1. After import my kit account file and type my passphrase, I had this error messages:

“Something went wrong!
The operation failed with the following error:
An error occured on the secure connection”
Error code 400

Or on another computer:

“Something went wrong!
The operation failed with the following error:
Could not verify the server key. Server internal error. Check with your administrator.”

Config:
Passbolt: community edition with docker
Reverse proxy: Traefik
Certificates: Let’s encrypt
Client: Windows 10, 11, virtual or physical machine.

The problem was that my reverse proxy only accept TLS 1.3 connections. I changed the parameter to accept TLS 1.2 and it works fine now.

In the Traefik reverse proxy config, in middlewares, change minVersion parameter to VersionTLS12.

tls:
  options:
    default:
      minVersion: VersionTLS12