I bought a new laptop with Windows 10.
I installed Tortoise CVS client (1.12.5) I didn't see overlay icon on the file or folder.
I found several solution (Regedit, Reinstall, Windows XP version).
At the end I found the elegant, simple, useful, working solution in this comment: "removing OneDrive helps me"
On the Lifehacker page contains few coomands how You can delete OneDrive.
http://lifehacker.com/how-to-completely-uninstall-onedrive-in-windows-10-1725363532
#########################################
Open Command Prompt in Administrator mode:
Right-click on the Windows icon in the taskbar and select Command Prompt (Admin).
Type in
taskkill /f /im OneDrive.exe
to terminate any OneDrive processes and hit Enter.
Then type in either
%SystemRoot%\System32\OneDriveSetup.exe /uninstall
if you’re using
32-bit Windows 10
or
%SystemRoot%\SysWOW64\OneDriveSetup.exe /uninstall
if you’re using 64-bit Windows 10 and hit Enter.
#########################################
****************************
Searching History:
File Icons are not displayed in Windows 10 :
https://gitlab.com/tortoisegit/tortoisegit/issues/2548
> removing OneDrive helps me. thanks
Tortoise CVS icons not visible in Win 7 x64 :
http://superuser.com/questions/236292/tortoise-cvs-icons-not-visible-in-win-7-x64
TortoiseGit icons not showing correctly :
https://gitlab.com/tortoisegit/tortoisegit/issues/692