Important:
Once you change your Password here, you will need to log in to any connected Services again. (Nextcloud-Instances, VPN-Connections, Task-Management Tools etc.)
Step 1: Navigate to your Companies Exchange Online Control Panel.
The URL should be something like https://webmail.company.com/ecp
Step 2: Log in with your Domain Credentials. You will get presented with a simple overview-Page of your Account (In your Language). Press „Change Password“ on the right side to proceed.
Step 3: Enter your current password as well as your New Password (twice).
As soon as you press „Save“, you will be logged out.