AltGr randomly stops working on windows 10

[ForumBot]

I am using un certain nombre de different disposition du claviers, depending on which language/keyboard I am woring with. Some of these [rely on the AltGr key for producing certain symbols](https://en.wikipedia.org/wiki/AltGr_key) like @ (e.g. the Swedish layout).

Since J'ai mis à jour to Windows 10, the AltGr key intermittently ceases to work (while Ctrl + Alt + still works). Similar issues have been reported with [Win 8](https://superuser.com/questions/602067/altgr-randomly-stops-working-on-windows-8) and [Win 8.1](https://superuser.com/questions/921581/alt-and-altgr-key-randomly-stop-working-on-windows-8-1), but the solutions to these do not apply to my case (and perhaps not to other Win 10 cases. So I will try to be very precise in describing the issue here.

To start with, when I say "the AltGr key stops working", what I mean is that it fails to act as Ctrl + Alt ([which is what it is supposed to do](https://en.wikipedia.org/wiki/AltGr_key#Control_.2B_Alt_as_a_substitute)). Cependant, it does do something: par exemple, when I press AltGr + 2 and then another ordinary key, say "A" what I get is "2a". Notez que the 2 does not appear until I press the A. Autrement dit, when pressed with AltGr, the "2"-key is somehow treated like a [dead key](https://en.wikipedia.org/wiki/Dead_key).

Changing between different disposition du claviers does not help. AltGr will not work neither in those other disposition du claviers nor in the original one when I switch back to it. Le seul moyen to get AltGr working again seems to be to reboot the system (though J'ai unlso seen instances where a reboot from a system with a working AltGr key led to a system with a non-working AltGr key).

It also does not make a difference whether I use the Windows 10 screen keyboard or the hardware keyboard. In the case of the On-screen keyboard, pressing the AltGr key correctly displays the characters on those keys that have one assigned to them (in combination with AltGr), but despite this, tapping one of those keys does not produce the displayed character.

[ForumBot]

The issue happens when you open a RDP connection. Just bring the RDP window in foreground and press Alt+Enter.

The issue will disappear on all other windows too

Source: [Comment Fix Alt Gr Key Not Working](https://tommynation.com/fix-alt-gr-key-working/#comment-2775211175).