ICO Files. Has the format changed? Getting white icons.

[Gongalong]

Hi folks,

 

We have some shortcuts that are created on the desktop with custom icon files using group policy.

 

In Windows 11 they are displaying erratically. Some machines show them, some show them as blank white icons.

 

For a misbehaving machine, I have tried manually changing the icons to something else that's within SHELL32.dll and they are fine, but when I change back to the ICO file they are blank again. I have also tried recreating the ICO files at icoconvert.com, which allegedly creates Win 11 compatible ICO files, and they are still white when selected.

 

I have also deleted the iconcache.db file under appdata\local for the user and restarted the PC, but that hasn't helped.

 

Any ideas on what could be wrong?

 

Thanks

[3s-gtech]

https://www.edugeek.net/forums/windows-10/233814-windows-10-22h2-july-2023-patch-tuesday.html

[Gongalong]

Thanks!

[psydii]

This is change is in response to security issues. I would strongly recommend an alternative solution to the registry tweak (which removes the protection).

 

Use GPP to copy the ico files to a secure (user READ ONLY access) on the client machines, and then have the shortcut reference that file rather than the network based one.