“Some settings are managed by your organization" issue solution

So what i have to do now how i can fix this

There is nothing that needs fixing, and nothing that you need to do. You are simply being told that you can find additional settings for Windows Update in the Group Policy Editor. Nothing more than that. I have exactly the same message in my copy of Windows 10.

The message was put there after v.1703 moved some Windows Update choices from the Settings app to the Group Policy Editor. If you opened the Settings app after v.1703 and wondered "where did those choices go?" Microsoft is telling you: They are now in the Group Policy Editor.

So what i have to do now how i can fix this

It isn't an error message.

The message simply means that some of the choices for the setting in question are found in the Group Policy Editor rather than the Settings app. And that's all it means. Sadly, many users have done harm to their copy of Windows by following directions - sometimes given here - to try to 'fix' an error that isn't an error in the first place.

If you have the Professional edition of Windows 10, you can open the Group Policy Editor and change any of its settings.

If you want to know why Microsoft uses the language "Some settings are managed by your organization" the reason is that settings found in the Group Policy Editor are typically used by organizations to setup their employees' computers. But individuals with a password to the Administrator account can see and change those settings too.

EDIT:

With regard to Windows Update: Commencing with v.1703 of Windows 10, Microsoft moved some choices that were previously found in the Settings app to the Group Policy Editor. You can find those settings in the Group Policy Editor here:

Computer configuration > Administrative Templates > Windows Components > Windows Update > Windows Update for Business

The settings that you are probably looking for are:

Select when Quality Updates are Received

and

Select when Preview Builds and feature updates are received