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Add troubleshooting for windows 11 x86 guest on arm host #46

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@theophanemayaud theophanemayaud commented Feb 27, 2024

For improving the situation regarding utmapp/UTM#6161

As per #4804 the "This PC can't run Windows 11" error troubleshooting guide isn't correct, at least in the case of windows x86 guest on arm host.
I found that the TPM is on by default when using the VM creation assistant, but the default number of threads seems to be 1 (although not shown). And this seems to be the problem for windows 11 installation, it prevents install with the error. Setting the cpu core count to 2 or more fixes the issue. 
I think the default should changed to 2 instead of 1. In the meantime I suggest adding this info to the troubleshooting guide
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Just found it's a duplicate of #41 but didn't see it before... I think my edit explains the situation better, but is also lengthier so I'll let you decide !

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