[tortoisesvn] TortoiseSVN icons overlay not showing after updating to Windows 10

You can go to:

Tortoise Settings > Icon Overlays -> Overlay Handlers

Screenshot

and uncheck all checkboxes, apply, then reactivate them and apply.

This will do the same thing in the registry but not manually.

Otherwise you can open the registry with the button below, and move up the keys, appending some spaces before the name.