If you're struggling to get online with Destiny 2's Weasel error code, there are a few quick fixes you can try.

Fix Virtual Switch Manager Error 0x80070002 applying Virtual Switch Properties changes, Failed while adding virtual Ethernet switch connections issue.

Dev Error 2901 in MW2 Explained Error Code 2901 occurs most commonly when trying to either boot the game or start a new Modern Warfare 2 match, causing a crash or temporary freeze.