Just a quick one as it took slightly longer to solve than it possibly should have done so this might help others with the same problem.

 

I was working fine with an Azure Data Lake Store for a few weeks until yesterday when I couldn’t access the files anymore.

 

The Azure Portal reported the following:

Authorization Failed – The user does not have the permission to perform this operation.

 

 

 

It turns out I was accessing it from a new location and the ADLS Firewall needed updating to whitelist my IP Address….

 

 

After adding my IP, the Data Lake Store is now accessible again.