Run the MTGAinstaller from the Temporary Folder Then click on Yes to confirm this operation. Open the Run dialog box again, and then type regedit in it and hit Enter. Then follow the on-screen prompts to complete the uninstallation. Step 2. Scroll down the list of installed programs to find Magic: The Gathering Arena, and then right-click it and select Uninstall. Step 1. Press the Win + R keys to open the Run dialog box, and then type appwiz.cpl in the box and hit Enter. Here’s how to fix the MTGA launcher invalid command line via reinstalling the game. To reinstall the game completely, you need to uninstall the game from Programs and Features and delete all entries in Registry Editor. Can anyone tell me how to fix this?Ĭlean reinstalling the game is one of the most command troubleshooting methods proven by many players to be useful. It was running fine this morning then seemingly out of nowhere I am getting this error. As the title suggests, I am getting this error every time I try to start the game. Here we summarize them as follows and provide detailed steps.Įrror: 'invalid command line'. Although there is still no official fix released by its developers, many users posted some proven methods in the Reddit forum to solve the MTGA invalid command line error. Sometimes, however, the game also runs into various errors such as MTG Arena get thread context failed, MTG Arena won't launch, and the one discussed in this post.Īccording to user reports, the MTG Arena invalid command line error can occur each time they try to start the game.

Since its release, this game has attracted lots of players. MTG Arena, short for Magic: The Gathering Arena, is a free-to-play digital collectible card game developed and published by Wizards of the Coast. Check for the Firewall or Antivirus Interference This post of MiniTool explores 3 proven ways to fix invalid command line MTG Arena quickly. A lot of gamers are troubled by the MTG Arena invalid command line error when trying to start the game.

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