Good points, as always.
However, business pressures, particularly in development, don’t always allow for developers to hold off using new versions of software. I for one work an in an environment where complex toolchain dependencies mean that I’m more or less forced to update to newer versions of code within a few days of them being publish. The knock-on effect of not doing this can lead to other issues with other toolchains.
I think the main issue here is that the Fusion products is not receiving anything like the support, if any, that it should for it to be considered “business class”. Like you I would pay for a supported product, and did in the past. But that’s not on offer. So if nothing materialises in the short term from Broadcom, I think it will be goodnight from me, and hello to Parallels.
Original Message:
Sent: 9/19/2025 9:22:00 AM
From: Technogeezer
Subject: RE: Fusion 13.6.4 issues with macOS Tahoe
From what I remember as a long time Fusion user, VMware rarely had "day-one" support for a new macOS major version.
It's a fair point, though, that many software vendors work with beta versions in order to announce that day one support. But that does not guarantee that the shipping product is free of bugs on the new macOS version. The industry is littered with software that worked fine in beta versions that suddenly stoped working in the released version due to last minute changes.
broadcom's shift to making the desktop hypervisor products free of charge is a both good and bad for us Yes, we no longer have to pay for Fusion.. But with no revenue for Fusion, it brings into question how much resource they're going to allocate to provide timely attention to the product. I for one would like the option to purchase support (open source vendors seem to have figured this out - free license, paid support) for the product to fund development and more timely bug fixes
An audio proceinng utility I use just released their Tahoe-compatible update. It's not bug free though - they list 2 known annoying bugs (with workarounds) impacting their product that they've reported to Apple and are awaiting fixes.
My guess is that you won't see any update in "a few more days". It's also entirely possible that this is an Apple problem introduced in Tahoe as this did not happen in Sequoia. In which case, we could be looking at an Apple fix
if one depends on any computer system for a living, it may be a good idea to wait until the software you use announces support for Tahoe. Early adopters always risk having problems.
------------------------------
- Paul (technogeezer)
vExpert 2025
------------------------------
Original Message:
Sent: Sep 19, 2025 02:01 AM
From: Bigdave1357
Subject: Fusion 13.6.4 issues with macOS Tahoe
Thanks Paul, for your efforts on this. Hopefully your back-channel will prove fruitful.
i think this might be the final straw for me if Broadcom don't recognise the severity of this situation and produce a quick fix. I've been with vmware products for years and I will be sad to go but as a business user I need tools that i can depend on. So far I have stuck with Fusion despite all the recent corporate changes but I really can now feel that I am using unsupported software.
We should not expect Broadcom to test Fusion in advance of new OS releases nor produce rapid bug fixes, or even fixes at all, if the product is unsupported, which seems to effectively be the case. But I do have that need so I guess I'm using the wrong product. A well known competitor product has full compatibility with Tahoe and full support. It's a paid product but then I was always a paying customer of Fusion.
I'll give it a few more days and see what transpires, but it might be time to pull the trigger.
Original Message:
Sent: Sep 18, 2025 09:37 PM
From: Technogeezer
Subject: Fusion 13.6.4 issues with macOS Tahoe
There is no other place to report Fusion bugs other than this forum. We can only hope that Broadcom will take note of bugs reported here and fix them in future versions of the product
Again, remember that Fusion running on Tahoe is an unqualified/untested configuration (I hate to use the term "unsupported" because Broadcom no longer provides technical support for Fusion). Since it hasn't been subjected to any official testing, it's likely that problems exist on Tahoe that weren't seen on Sequoia.
------------------------------
- Paul (technogeezer)
vExpert 2025
Original Message:
Sent: Sep 18, 2025 08:48 PM
From: kazuyoshi tomita
Subject: Fusion 13.6.4 issues with macOS Tahoe
I'm having the same issue too.
My environment:
- Mac Studio 2023 (M2 Max)
- Tahoe 26.0
- VMware Fusion: 13.6.4
According to the vmware-vmfusion.log, a segmentation fault appears to occur when resuming macOS.
==============
2025-09-19T00:02:41.602Z In(05) VMware Fusion IsTopologySupported: Topology: 1729x921 @ 0,0.
2025-09-19T00:02:41.602Z In(05) VMware Fusion IsTopologySupported: Guest screen size limit: 8192x8192, 10 displays max, bounding box memory limit: 268435456 bytes.
2025-09-19T00:02:41Z[+0.000] Wa(03) VMware Fusion Caught signal 11 -- tid 351631 (addr 500003640)
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion SIGNAL: pc 0x183266394 sp 0x16dc729b0
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion SIGNAL: x0 0x14ddd0000 x1 0x500003640 x2 0x1865848 x3 0x14ddd0020
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion x4 0x3b2233640 x5 0x0 x6 0x0 x7 0x0
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion x8 0x3640 x9 0x731 x10 0x3608 x11 0x4
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion x12 0x4 x13 0x0 x14 0xffffffffffffffff x15 0x3
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion x16 0x183266360 x17 0x1f123cd70 x18 0x0 x19 0x8806a21e0
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion x20 0x4 x21 0xd82 x22 0x732 x23 0x8829e05d0
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion x24 0x1e9841000 x25 0x180 x26 0x16dc72dd0 x27 0x180
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion x28 0x0 x29 0x16dc72a80 x30 0x1885ffa88
<snip>
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion SymBacktrace[0] rip=000000010514c260 in function Util_BacktraceWithFunc in object /Applications/VMware Fusion.app/Contents/Frameworks/libvmwarebase.dylib loaded at 0000000104e68000
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion SymBacktrace[1] rip=0000000104fdb530 in function Sig_Init in object /Applications/VMware Fusion.app/Contents/Frameworks/libvmwarebase.dylib loaded at 0000000104e68000
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion SymBacktrace[2] rip=0000000183266744 in function _sigtramp in object /usr/lib/system/libsystem_platform.dylib loaded at 0000000183263000
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion SymBacktrace[3] rip=00000001885ffa88 in function -[NSSoftwareSurface frontBuffer] in object /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit loaded at 00000001876c9000
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion SymBacktrace[4] rip=00000001885fe510 in function -[NSCGLSurface flushRect:] in object /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit loaded at 00000001876c9000
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion SymBacktrace[5] rip=00000001885fe260 in function NSCGLSurfaceFlush in object /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit loaded at 00000001876c9000
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion SymBacktrace[6] rip=00000001e816ce40 in function glSwap_Exec in object /System/Library/Frameworks/OpenGL.framework/Versions/A/Resources/GLEngine.bundle/GLEngine loaded at 00000001e8153000
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion SymBacktrace[7] rip=00000001e7f766f8 in function CGLFlushDrawable in object /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL loaded at 00000001e7f69000
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion SymBacktrace[8] rip=000000018781ce68 in function -[NSOpenGLContext flushBuffer] in object /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit loaded at 00000001876c9000
<snip>
2025-09-19T00:02:41Z[+0.000] Wa(03)+ VMware Fusion The core dump limit is set to ZERO; no core dump should be expected
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion Msg_Post: Error
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion [msg.log.error.unrecoverable] VMware Fusion unrecoverable error: (VMware Fusion)
2025-09-19T00:02:41Z[+0.000] In(05)+ VMware Fusion Unexpected signal: 11.
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion [msg.panic.haveLog] A log file is available in "/Users/tomita/Library/Logs/VMware Fusion/vmware-vmfusion.log".
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion [msg.panic.requestSupport.withoutLog] You can request support.
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion [msg.panic.requestSupport.vmSupport.apple.menu]
2025-09-19T00:02:41Z[+0.000] In(05)+ VMware Fusion To collect data to submit to VMware support, choose "Collect Support Information" from the "Help" menu.
2025-09-19T00:02:41Z[+0.000] In(05)+ VMware Fusion You can also run "VMware Fusion Problem Reporter.tool" inside the VMware Fusion application bundle directly.
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion [msg.panic.response] We will respond on the basis of your support entitlement.
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion ----------------------------------------
2025-09-19T00:02:41Z[+0.000] In(05) VMware Fusion Exiting
==============
Is there a place where I can report this?
Original Message:
Sent: Sep 17, 2025 09:39 AM
From: Bigdave1357
Subject: Fusion 13.6.4 issues with macOS Tahoe
Fusion seems to be impacted be a serious bug in relation to Tahoe and sleep.
When my host MBP goes to sleep with Fusion running a Windows 11 ARM guest, on waking from sleep the whole Fusion app seems to be degraded. I am unable to view any Fusion window, including the VM Library or the guest. The guest is still running, as far as I can tell, but its window is not visible any more within macOS.
Quitting the Fusion app and restarting it doesn't solve the problem. On restart, Fusion will then display its VM Library window but doesn't seem to be able to reconnect with the still running guest, nor control it.
Shutting down the host clears the issue, obviously. Another less inconvenient workaround is to quite the Fusion app and then search for 'vm' in the Activity Monitor to find the guest virtual machine, and then quit that. After this Fusion can be restarted, the guest rebooted, and operation resumes.
Obviously killing the guest vm like this is far from ideal.
This bug makes working in Fusion almost impossible. If I walk away from my machine for any time, I need to suspect/shutdown the guest before walking away, in case my MBP goes to sleep.
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