@ubi-karl. thank you.
If developers will need any additional info, please let me know.

Legion is a great game, congratulations to the Watch Dogs team.

@ubi-spacecats, to be clear, I can play the game if run Ubisoft Connect as administrator.
But all settings, saves, photos and so on are placed in administrator's home folder an can not be accessed by user.

Shortcut to Ubisoft Connect is also placed in administrator's Start menu and can not be accessed by user, so I had to make this shortcut manually. This is a common problem with installer, because we need admin permissions to install Ubisoft Connect (why?). It results in some minor inconvenience, and let it be.

The only step could be seen in MsInfo is clean boot. They told me to do clean boot twice. What for?

@ubi-karl, yes, you are correct.
The only game could not start by non-admin user is Watch Dogs: Legion.
Other games run correctly. Division and Ghost Recon run as is, all Assassin's Creed games ask for admin password on start (of course, it would be better without admin password, but it's OK if they run OK).

Support asks me for DxDiags and MsInfo 8 times already. What is the point? Are they robots?

When trying to start "Watch Dogs: Legion" there is only this message.


In \Ubisoft Game Launcher\logs\launcher_log.txt there is a line:
[20672] 2022-01-03 19:19:11 [12172] ERROR PlayLaunchGame.cpp (150) Game executable is not found at bin/WatchDogsLegion.exe.

This file is definitely there:
PS D:\Games\Watch Dogs Legion> dir bin\*.exe
Каталог: D:\Games\Watch Dogs Legion\bin
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 21.12.2021 2:23 143184 WatchDogsLegion.exe
-a---- 21.12.2021 2:23 830984 WatchDogsLegion_BE.exe

Windows 10 Pro.

After "Ubisoft Connect" reinstall there is no shortcut in Start menu of local user, only in Administrator Start menu.

Local user has no administrative permissions and will not.

When "Ubisoft Connect" is started with Administrator, it runs "Watch Dogs: Legion". But all settings, savegames, photos and so on are placed in Administrator's home folder and not accessible by local user.

All other games run correctly.

Support asks for MSInfo and DXDiags 5 or 6 times. What is the point?