Disable
Local Machine
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge]
“DefaultPluginsSetting”=dword:00000002
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome]
“DefaultPluginsSetting”=dword:00000002
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer]
“DisableFlashInIE”=dword:00000001
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox\FlashPlugin\Allow]
“1”=”none.com”
Current User
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy Objects\{6F62A819-CC05-4484-81EE-7CEF4291EFE7}Machine\Software\Policies\Microsoft\Edge]
“DefaultPluginsSetting”=dword:00000002
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy Objects\{6F62A819-CC05-4484-81EE-7CEF4291EFE7}Machine\Software\Policies\Google\Chrome]
“DefaultPluginsSetting”=dword:00000002
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy Objects\{6F62A819-CC05-4484-81EE-7CEF4291EFE7}Machine\Software\Policies\Microsoft\Internet Explorer]
“DisableFlashInIE”=dword:00000001
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy Objects\{6F62A819-CC05-4484-81EE-7CEF4291EFE7}Machine\Software\Policies\Mozilla\Firefox\FlashPlugin\Allow]
“**delvals.”=” ”
“1”=”none.com”
Uninstall
Adobe provides an Uninstall Tool
Flash uninstaller from Adobe | End of Life Article
player.exe -uninstall
Microsoft provides removal MSUs in the Windows Catalog
Flash removal from Microsoft (KB4577586) | KB Article