To display screensaver as Logon screen saver, i.e. when no users are logged in, please follow the instructions below:

Ultra Screen Saver Maker

For example, to display screensaver c:\Windows\SysWOW64\test.scr after 60 seconds when no users are logged in, set the following registry keys using Command Prompt as Administrator:

reg add "HKU\.Default\Control Panel\Desktop" /v ScreenSaveTimeOut /t REG_SZ /d 60 /f
reg add "HKU\.Default\Control Panel\Desktop" /v ScreenSaveActive /t REG_SZ /d 1 /f
reg add "HKU\.Default\Control Panel\Desktop" /v SCRNSAVE.EXE /t REG_SZ /d "c:\Windows\SysWOW64\test.scr" /f


Warning: Be very careful when modifying the registry!

If you wish to set a video as your Logon screen saver, you should utilize the AVI Uncompressed video format with the UYVY video codec, due to minimum privileges constraints in Windows. Should the video exceed 2 GB in size, reducing the video resolution is necessary. Alternatively, you may opt for other AVI video codecs such as Intel IYUV, Basic Windows bitmap format/None, Microsoft RLE/Run-length encoding, and Microsoft Video 1, which offer lower video quality but result in smaller file size.

See more information how to change the logon screen saver in Windows.

Live Screensaver Creator

Unfortunately, it is not possible to display Web based screen saver as Logon screen saver. It is run by the LocalService account that has minimum privileges on the local computer and presents anonymous credentials on the network. Creating both Edge WebView2 Control and IE WebBrowser Control from Microsoft simply do not work in such environment.