Microsoft 365 online: Signing up
To log in to Microsoft 365 online, you can use https://office365.cuni.cz/, which directs you to the University's Authentication Service (CAS) to verify your Charles University (CU) identity.
On the CAS sign-in page, you log in with your university account (as you would to SIS, for example), where the username is the personal CU number allocated to each student and member of staff and is shown on the student ID card (e.g. ISIC) or staff ID card (hereafter referred to as CUČO).
Note: If you don't know your password or have another problem with your password, the CAS website has help on how to resolve the situation.
You can log in using any of the following Microsoft pages:
On the Microsoft login page, enter any email address that ends with "@cuni.cz", such as:
a@cuni.cz
No matter which page you use, you will always be redirected to the CAS sign-in page to verify your Charles University identity.
If you access Microsoft 365 documents via a direct link, the Microsoft login page may appear before redirecting you to CAS.