This warning displays if you don't have enough available memory on your system to use your current settings.

Troubleshooting steps to resolve error message in World of Warcraft.

サポートされていないオペレーティングシステムのエラー

Your game account version does not allow this upgrade.

Your game account version does not allow this upgrade.

Your game account version does not allow this upgrade.

Your game account version does not allow this upgrade.

Your game account version does not allow this upgrade.

What to do if you do not have a Battle.net account but are receiving emails from Blizzard Entertainment

If you are experiencing errors while patching StarCraft, please try reinstalling the game.