yup. we need to wait for the valheim plus developers to patch their mod to be compatible with this new update. In the meantime, you can rename your winhttp.dll file in your game installation folder to something else (do not delete it) to get Valheim vanilla working again.

DO NOT OPEN OR PLAY ANY OF YOUR Valheim Plus WORLDS!!!!!!!!!!!

Once the Valkheim Plus developers get their mod updated for compatibility, people can reinstall it according to the developer's instructions, and play again. I am not affiliated with that team--just general IT advice.

seriously: DO NOT open or play any worlds with Valheim Plus while that file is renamed!!! it could corrupt your entire world.