The operation of signing in via Google or Microsoft accounts works as follows:

1. The company must have the option enabled to allow single sign-on through Google or Microsoft accounts.
2. The user with the same email address must already be added under the company (e.g., janez.novak@gmail.com).

The user completes the sign-in through the button on the login page.

Error: The company does not have Google or Microsoft sign-in enabled in MetaKocka.

You need to enable the Google or Microsoft sign-in option under Settings - Your company.

Error: User with the email address my.email@gmail.com does not exist 

It is necessary to add a user with the exact same email address under MetaKocka users (Settings -> Users). If you do not have access, please contact your account administrator.

Adding a user: https://metakocka.freshdesk.com/en/support/solutions/articles/3000062296-adding-a-customer

First login

Upon first login, it is necessary to confirm the login to Google through the MetaKocka application.

For first login, both regular email accounts (for example, janez.novak@gmail.com) and Google Workspace accounts (usually tied to your domain - janez.novak@mycompany.com) are supported.

Remove permissions for SSO

Google: On your account page: https://myaccount.google.com/ you need to remove the permission for using connected applications. 

Microsoft: On your account page: https://account.microsoft.com/privacy/app-access, you need to sign in, and then you'll receive a verification code on your Email. Enter the code to access your account privacy settings and remove the permissions for connected applications.