Sometimes the update mechanism from Microsoft thinks it needs to update a driver...but GeForce Experience sees new drivers sooner. Perhaps you have two different update mechanisms and one doesn't know the same information as the other. Note that updating GeForce Experience is not the same as updating the graphics driver...GeForce Experience does have a way of updating to the newest driver though. I would think this latter is the better update source.
You could ask on the GeForce forums:
https://forums.geforce.com/
I go straight to the driver downloads:
https://www.nvidia.com/Download/index.aspx?lang=en-us
If it does turn out that the Windows update mechanism is out of sync with the NVIDIA mechanism, then sooner or later Windows will catch up. At least on Windows 7 you can ignore the Windows update mechanism wanting the "newer older misinformed" version. If this is Windows 10, then perhaps you are being forced to use the wrong version at each boot.