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GameLoop / TAC error: 'Failed to start app. Please exit and try again. Error code: 1'

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When launching CODM through GameLoop / TAC or via the GameLoopHub Smart Tool, an error dialog appears:

An error occurred.

Failed to start app. Please exit and try again.

Error code: 1 (or sometimes Error code: 110110)

The dialog has a "Get Help" link and an "Exit" button. Clicking Exit and retrying produces the same dialog. Symptoms reported by multiple users:

  • Reinstalling the emulator 3 times doesn't help.
  • The error usually appears after a Windows update or a Core Isolation / registry change.
  • "It used to work yesterday and now it won't open" is the most common framing.
  • "Specs are good, gave it elevated permissions, virtualization is on, still get the dialog."

Code 1 and 110110 share the same fix sequence — both indicate Smart Tool can't complete the hypervisor / process bootstrap.

Last updated 6 weeks ago0 users reported this issue43
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Solutions

Solution 1

Kill all TAC processes, connect to a VPN, then relaunch. Per ӃryptønPsychø's canonical fix:

  1. Open Task Manager → Details tab.
  2. Kill every process containing "tac", "gameloop", "androidemulator", "AndrowsConnect", or similar.
  3. Or use the Smart Tool's "Close GameLoop processes" button if it's still functional.
  4. Connect to a VPN — US server preferred.
  5. Relaunch the emulator via the Smart Tool, not directly.
Jun 4, 2026
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Solution 2

Disable Memory Integrity if Code 1 appeared after a Core Isolation toggle. Settings → Privacy & Security → Windows Security → Device Security → Core Isolation → toggle Memory Integrity OFF → reboot. See our installer Hyper-V loop guide for context on why VBS interferes.

Jun 4, 2026
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Solution 3

Disable "Super Resolution" in graphics experimental settings. Open the emulator (or its settings panel directly), find the graphics → experimental settings → toggle Super Resolution OFF. This fix resolves Code 1 for users whose error appeared after updating GPU drivers.

Jun 4, 2026
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Solution 4

Clean reinstall using Revo Uninstaller. Default Windows uninstall leaves leftover game files. Use Revo Uninstaller in advanced mode, reboot, and install fresh.

Jun 4, 2026
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Solution 5

Always launch through the Smart Tool, never directly. Direct CODM shortcut launches reproduce Code 1 reliably for some configurations because they skip Smart Tool's environment prep (FPS apply, keymap apply, cache restore) that the new TAC build expects to see.

Jun 4, 2026
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