Wiewiórowski complained that Frontex had violated the principle of accountability, its duties as a responsible entity and data protection requirements through technology, and instructed Frontex to expand its previously implemented preliminary data protection impact assessment. The Warsaw-based authority must also provide information about current data flows to Microsoft and other providers or third parties currently in use and justify its purposes. At the time of the review, "the agency did not have a sufficiently accurate configuration at the application management level that would have made it possible to stop the collection and processing of diagnostic data for Windows 10 and Office Pro Plus if necessary," criticizes Wiewiórowski. With Windows 10, Frontex was also unable to verify the personal information Microsoft collects via telemetry data. In June 2020, the inspector warned against the unconsidered use of Microsoft products and advised alternatives.