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I'm not working with winapi, just using Qts features. So you need to flush your stdout or I have to recompile it every time. :) This pull request can be...

@BlackWingedKing Are you able to open books? Because I couldn't.

@BlackWingedKing Btw, I compiled it without sandboxing support and it works. 

@BlackWingedKing In /src/main.js at line 38, `webContext.set_sandbox_enabled(true)` I changed it to false, `webContext.set_sandbox_enabled(false)` Then builded and installed, and it worked.

Here are some additional logs, [boot.log](https://github.com/xcp-ng/xcp/files/9033184/boot.log) [crit.log](https://github.com/xcp-ng/xcp/files/9033185/crit.log) [daemon.log](https://github.com/xcp-ng/xcp/files/9033186/daemon.log) [hypervisor.log](https://github.com/xcp-ng/xcp/files/9033187/hypervisor.log) [kern.log](https://github.com/xcp-ng/xcp/files/9033188/kern.log) [xensource.log](https://github.com/xcp-ng/xcp/files/9033189/xensource.log)