Hi , Did you found a solution for this? I have also issues with Splunk Enterprise 8.1.6 on Windows 2019 platform with Upgrade Readiness App 4.0.2. Same issue with Upgrade Readiness App 3.1.0. When launching Upgrade Readiness App, it says "No scan details to show. Please run a new scan to view the details". When starting Platform Compatibility scan (only one app selected), it starts to scan but scanning never finishes (Session timeout for Splunk Web is 2 days). If I refresh (F5) the screen after starting, it says "No scan details to show. Please run a new scan to view the details". If I start scanning again, it says that scanning already running. If I try to cancel scanning it could say "No entry found" I cannot edit  "Manage Scan Scheduler" to disable this because the options are greyed out if this could disturb my scanning. When trying to scan jQuery Scan or Python Scan it gives an error message "[WinError 193]%1 is not a valid Win32 application" This should be Windows compatible app. We only have possibility to run Splunk on Windows. Thank you for your help. Regards, Harri   ... View more