# Error of some kind on the online multiplayer functionality **URL:** https://forum.makecode.com/t/error-of-some-kind-on-the-online-multiplayer-functionality/44718 **Category:** Help **Created:** [June 29, 2026, 6:16pm UTC](https://forum.makecode.com/t/error-of-some-kind-on-the-online-multiplayer-functionality/44718 "2026-06-29T18:16:15Z") **Posts on this page:** 4 **Page:** 1
### Author: ![Munchkin-37](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/munchkin-37/32/32924_2.png) [@Munchkin-37](https://forum.makecode.com/u/Munchkin-37) #### Post date: [June 29, 2026, 6:16pm UTC](https://forum.makecode.com/t/error-of-some-kind-on-the-online-multiplayer-functionality/44718/1 "2026-06-29T18:16:16Z")
I have recently been testing a fighting game that I made, and as I am on summer break I cannot test it with my friends at school. This lead me to attempt to use the “host online multiplayer” functionality on makecode arcade, but whenever I have attempted to use it, my friends have reported seeing blank grey screens that occasionally flicker white. In the pictures they have sent me there is no console on the screen and the only things that show up are the connected players and the emotes. I, on the other hand, can fully see my game and it’s screen. My friends are able to use inputs and I see it on my screen, but they have no clue what is happening. The game is not in a stage where it has sound yet so I havent tested that yet. I have run makecode from the website and from the app whith no differences. Am I missing something obviouse? I do that sometimes hehe. ![image](https://us1.discourse-cdn.com/flex020/uploads/makecode/original/3X/6/3/638dec91c19a5b399a8cf3c177a369c21edb4132.png) ---
### Author: ![VoxelMaster64](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/voxelmaster64/32/32075_2.png) [@VoxelMaster64](https://forum.makecode.com/u/VoxelMaster64) #### Post date: [June 29, 2026, 9:09pm UTC](https://forum.makecode.com/t/error-of-some-kind-on-the-online-multiplayer-functionality/44718/2 "2026-06-29T21:09:44Z")
can you send it? ---
### Author: ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino) #### Post date: [June 29, 2026, 10:20pm UTC](https://forum.makecode.com/t/error-of-some-kind-on-the-online-multiplayer-functionality/44718/3 "2026-06-29T22:20:26Z")
different screen sizes are not supported by multiplayer, and it looks like you are using that. ---
### Author: ![Munchkin-37](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/munchkin-37/32/32924_2.png) [@Munchkin-37](https://forum.makecode.com/u/Munchkin-37) #### Post date: [June 29, 2026, 11:19pm UTC](https://forum.makecode.com/t/error-of-some-kind-on-the-online-multiplayer-functionality/44718/4 "2026-06-29T23:19:14Z")
ah, thank you!