Maximum Allowable Memory Windows 11 Virtual Machine?

[Geoffrey84]

My host system (macOS Sequoia 15.2) has 128 GB of available memory.  If I try to allot more than 48 GB of RAM to my Windows 11 x64 ARM virtual machine in VMware Fusion 13.6.1 I receive an error message : "Transport (VMDB) error-14: Pipe connection has been broken".

Is there any way I can allocate more memory to my guest system or is 48 GB of RAM the maximum allowable setting?

[Technogeezer]

Have you taken a look at the vmware.log files found in the VM's bundle to see what precedes the pipe connection has broken message? That might give us more of a clue about what might be causing the error.

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- Paul (technogeezer)
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[Geoffrey84]

Good morning Paul

Thanks for your suggestion!  The VMware.log file is quite long and doesn't mention the error I've noted, but there are two "Panic" entries to be found, one of which occurs at the bottom of the text sequence: "vmx Panic: monitor not available, skipping monitor coredump."

The second entry appears quite a ways above the last: "vmx PANIC: VERIFY bora/vmcore/monitor/ulm/platform/macos/arm64/ulm.c:378"

I've attached the complete log file for reference and if you can make head or tail of it please let me know.

Attachment(s)

vmware.log   220 KB 1 version

[Technogeezer]

It's definitely a vmx monitor crash, but without someone from Broadcom analyzing the crash, there's not much more I can add here. According to the Fusion documention,, Fusion is supposed to be able to support 128GB of VM memory.

There's at least one other poster finding issues running Fusion on the macOS 15.2 beta. Does this issue exist when running Fusion on 15.1.1? 

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- Paul (technogeezer)
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[Technogeezer]

@Manjunath Sanjeev @Michael Roy can someone from Broadcom comment on if there's a max memory size limit for a Fusion VM on Apple Silicon? Or does a bug report need to be opened on this issue?

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- Paul (technogeezer)
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[Prajakta Malla]

Hi

The Engineering team is looking into this issue. We will keep the thread posted.

Thanks

[Stefanos Zachariadis]

Hi - any update on this? I have the same issue when trying to run and ubuntu vm on vmware fusion 13.6.2. My host mac has 128GB but i get the pipe error if my VM has over 62GB of ram.

[Stefanos Zachariadis]

Anyone? It's been 5 months since the engineering team was looking into this issue? Thank you