====== ISSUE: Failed to get OAuth2Tokens after retrieved from OneDrive  ======
Article ID: 8079 \\ Reviewed: 22/04/2020 \\ Product Version: CloudBacko Pro / Lite / Home: 4.1.0.0 or above  \\ OS: All platforms

===== Problem Description =====
When adding a OneDrive or OneDrive for Business as a backup destination for a backup set, the following error is received:

Failed to get OAuth2Tokens after retrieved from OneDrive

{{public:edition:cloudbacko_pro:8079_onedrive.png}}

===== Cause =====
This issue can occurs if the firewall application on the CloudBacko Pro / Lite / Home client computer is blocking its access to the Microsoft IP addresses.


===== Resolution =====
To resolve this issue, configure your firewall application to allow out going connections to the following Microsoft IP addresses.

==== Example: ====

Allow out going connections to the following Microsoft IP Addresses (40.126.9.* and 20.190.137.*):

40.126.9.5 \\ 
40.126.9.6 \\ 
40.126.9.7 \\ 
40.126.9.8 \\ 
40.126.9.65 \\ 
40.126.9.66 \\ 
40.126.9.67 \\ 
40.126.9.68 \\ 
... \\ 
 \\ 
20.190.137.0 \\ 
20.190.137.1 \\ 
20.190.137.2 \\ 
20.190.137.97 \\ 
20.190.137.98 \\ 
20.190.137.99 \\ 
...