How to troubleshoot “Cannot Start App” or “Cannot start Desktop” when launching an App or Desktop

Note: This is a master overview article. The solutions for each of the root causes is present in child articles shown in the following tables. The following error is displayed when launching an app “Cannot start App” or desktop: “Cannot start Desktop” Where to Start Troubleshooting Do you get the...

Cannot Start App - Federation Authentication Service

The application launch fails with an error "Cannot Start App" once FAS is enabled on the StoreFront. On the StoreFront you will see Event ID 28 and on FAS server you will see Event ID 123...