Azure Data Lake Store : Authorization Failed - The user does not have the permission to perform this operation 24. May 2017 SachaTomey Azure, Data Lake, Data Lake Store, U-SQL (0) 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.