Cannot get the access token, AcquireTokenAsync returned null

[negberts]

Since saturday the 21st we are receiving the error "Cannot get the access token, AcquireTokenAsync returned null" while there were no changes on our side.

We are using the username/password combination and are using the powershell cmd to schedule a refresh of the dataset every night. Any idea what could be wrong?

[negberts]

Fixed it by adding [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 to our script

[allanmoller]

Have same problem! tested from version 2.0.1.5 and forward all with same result!!

[RuiRomano]

Can you please test with the new version? updated the adal.net dll

[joeltone]

I'm still seeing the same issue with the current version.

[MarchingBug]

Any updates on this issue?

[collinsmc23]

Second what MarchingBug is saying here!