Issue accessing SharePoint, OneDrive and Teams

[Ian Trunkfield]

Dear All

We had an issue where we were not able to access the following sites or functions:

MS SharePoint Online

OneDrive

MS Teams

This is not affecting access to Admin page or emails etc.

The issue appears only to affect people within our Network.

The sites and functions can be accessed using other internet connections.

Does anyone know of any firewall policies that can have this affect?

Too our knowledge no changes have been made to our firewall.

Thanks for reading

Ian  T

[#2]

Seems like someone set a conditional access policy that only allows access outside a certain network would be my only guess, but I guess it's not entirely impossible that your work IP's got blacklisted, but due to the fact you can still access admin, it seems like it's going to be related to conditional access.

See this document: https://docs.microsoft.com/en-us/azure/active-directory/active-directory-conditional-access-untruste...

Maybe someone set it up and excluded all trusted locations?