If you enable or don't configure the Adobe Flash Click-to-Run setting, Microsoft Edge will require a user to click the Click-to-Run button, to click the content, or for the site to appear on the auto-allowed list, before loading and running the content.
Sites get onto the auto-allowed list based on user feedback, specifically by how often the content is allowed to load and run.
| Registry Hive | HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER |
| Registry Path | Software\Policies\Microsoft\MicrosoftEdge\Security |
| Value Name | FlashClickToRunMode |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |