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GameLoop installer stuck on Hyper-V step — installer restarts to beginning

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The GameLoop / TAC installer reaches the Hyper-V prompt near the end of the install but, instead of completing, bounces back to the beginning of the installer and gets stuck on the same screen on the next attempt. Symptoms reported across multiple users:

  • Installer reaches the Windows feature step that requires Hyper-V or WSL.
  • A reboot prompt appears, but after restarting the installer resumes from scratch instead of where it left off.
  • Sometimes presents error code 1 after enabling Core Isolation / registry tweaks.
  • Reinstalling the emulator from scratch does not break the loop.
  • Smart Tool's own "Repair Environment" dialog can also trigger this state.

Affects: Windows 10 and 11 with virtualization disabled in BIOS, BIOS-locked virtualization, or Memory Integrity / Core Isolation enabled. AMD machines with Virtualization-based Security (VBS) active are over-represented in reports.

Last updated today0 users reported this issue3
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Solutions

solution #508

Enable Virtualization in BIOS first. Reboot, enter BIOS (F2 / Del depending on motherboard), find Intel VT-x, AMD-V, or SVM Mode, set it to Enabled, save and reboot. Without this prerequisite, every other fix below silently fails.

Jun 4, 2026
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solution #509

Turn on Hyper-V via Windows Features. Press Win+R → type optionalfeatures → check:

  • Hyper-V
  • Virtual Machine Platform
  • Windows Hypervisor Platform

Click Apply, reboot. After reboot, run the installer again — it should skip the Hyper-V prompt entirely.

Jun 4, 2026
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solution #510

Disable Memory Integrity (VBS) if the loop persists. This is the fix that resolves "error code 1 after registry tweaks" on most AMD machines:

  1. Settings → Privacy & Security → Windows Security → Device Security → Core Isolation
  2. Toggle Memory Integrity OFF
  3. Reboot

Memory Integrity (a sub-feature of VBS) keeps Hyper-V locked even when the feature is enabled, and the GameLoop / TAC installer cannot complete its hypervisor handshake while it's on.

Jun 4, 2026
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solution #511

Clean reinstall using Revo Uninstaller. A failed half-install leaves registry stubs and orphan files that the next installer trips on. Per ӃryptønPsychø's recommendation:

  1. Use Revo Uninstaller (free version is enough) on the existing GameLoop / TAC entry.
  2. Choose "Advanced" scan — let Revo find and delete the registry leftovers.
  3. Reboot.
  4. Install fresh.

The default Windows uninstaller leaves enough state behind that re-running the installer hits the same dead end.

Jun 4, 2026
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solution #512

Use Smart Tool's "Repair Environment" if the installer succeeds but the emulator still won't run. When the GameLoopHub Smart Tool detects a Hyper-V state mismatch on launch, it offers a Repair Environment dialog. Click Repair, wait for completion, then relaunch the emulator. If Repair fails, fall back to S3 (Memory Integrity off) — Repair cannot work around VBS-locked hypervisors.

Jun 4, 2026
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