Fix g_bGuestPoweroff fastpipeapi.cpp 1161/1153 Error in LDPlayer
On Windows 8 and Windows 10, LDPlayer can stop at 50% during startup and show the error g_bGuestPoweroff fastpipeapi.cpp:1161/1153. The likely cause is a conflict between Windows virtualization features and LDPlayer's use of VT. This guide
Before You Start
Prerequisites: VT must be enabled in your BIOS. If LDPlayer does not launch at all, check this first. See [Enable Virtualization (VT) on Windows 10 and 11 for LDPlayer](how-to-enable-vt.md).; You need administrator rights on the PC.; The exact error text, so you can confirm that this guide matches your problem.
## Overview On Windows 8 and Windows 10, LDPlayer can stop at 50% during startup and show the error g_bGuestPoweroff fastpipeapi.cpp:1161/1153. The likely cause is a conflict between Windows virtualization features and LDPlayer’s use of VT. This guide turns off those Windows features, turns off Memory integrity, and checks VBS (Virtualization-Based Security).
## Why this works Windows uses hypervisor features for several virtualization and security functions. The source article links this error to a conflict between those features and LDPlayer’s use of VT. Turning off the features frees VT for LDPlayer. The result depends on your Windows build and hardware, so check the result yourself.
## What to expect After the restart in step 10, the features you cleared stay off. Start LDPlayer. A successful start gets past the 50% point where the error appeared.
## Verify Start LDPlayer. It should get past the 50% stop without showing the g_bGuestPoweroff error.
## Common mistakes
- Running Command Prompt without administrator rights. The bcdedit command then fails.
- Skipping the restart in step 10. Memory integrity may still be active.
- Keeping these protections off after you finish. Use the security note to turn them back on.
## Security note Turning off Hyper-V, Virtual Machine Platform, Windows Hypervisor Platform, Windows Sandbox, Memory integrity, or VBS lowers Windows protection. Memory integrity and VBS help guard the system against malware that tries to run in protected areas of the kernel. Windows Sandbox and Hyper-V can isolate files you do not trust. While these features are off, keep your antivirus running and avoid opening untrusted files.
To revert:
- Open Turn Windows features on or off and check the features you need back on.
- Open Command Prompt as administrator and run
bcdedit /set hypervisorlaunchtype auto. - Restart the PC.
- Open Windows Security, go to Device security > Core isolation details, and turn Memory integrity back on.
- Restart the PC.
Turning these features back on can bring the error back. Test LDPlayer after each change.
## Notes and Troubleshooting
- The features in steps 2 to 5 are Hyper-V, Virtual Machine Platform, Windows Hypervisor Platform, and Windows Sandbox.
- Turning off these features and Memory integrity lowers Windows security protections. See the security note above for the risk and how to revert.
- If the error continues, contact LDPlayer support at [email protected]. Include the error text and your Windows version.
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