MacOS Monterey 12.0.1 final crashs after connecting to Windows Server

panic(cpu 12 caller 0xffffff80121e5b53): Kernel trap at 0xffffff80120fe449, type 13=general protection, registers:
CR0: 0x000000008001003b, CR2: 0x000000012410a0f0, CR3: 0x000000067c6bc14c, CR4: 0x00000000003626e0
RAX: 0x01f7c00000000013, RBX: 0xffffff857a1bf990, RCX: 0x000000000003fffa, RDX: 0x0000000089544000
RSP: 0xffffffe0d78b3dc0, RBP: 0xffffffe0d78b3e40, RSI: 0x007300000000020d, RDI: 0xffffff858471d1c8
R8: 0xffffff8059cfd1a0, R9: 0x00000034d88a794e, R10: 0xffffffd0465b2ae8, R11: 0xffffff85764f7e30
R12: 0xffffff858471d1c8, R13: 0x007300000000020d, R14: 0xffffff857a1bf980, R15: 0xffffff857a1bf980
RFL: 0x0000000000010217, RIP: 0xffffff80120fe449, CS: 0x0000000000000008, SS: 0x0000000000000000
Fault CR2: 0x000000012410a0f0, Error code: 0x0000000000000000, Fault CPU: 0xc, PL: 2, VF: 0

Panicked task 0xffffff85727fc120: 77 threads: pid 1331: FreeRDPSandboxed
Backtrace (CPU 12), panicked thread: 0xffffff85764f7e30, Frame : Return Address
0xffffff8011f5c1f0 : 0xffffff801209c00d
0xffffff8011f5c240 : 0xffffff80121f5d85
0xffffff8011f5c280 : 0xffffff80121e5763
0xffffff8011f5c2d0 : 0xffffff801203ba60
0xffffff8011f5c2f0 : 0xffffff801209c3dd
0xffffff8011f5c410 : 0xffffff801209bb96
0xffffff8011f5c470 : 0xffffff8012918649
0xffffff8011f5c4e0 : 0xffffff80121e5b53
0xffffff8011f5c660 : 0xffffff80121e5838
0xffffff8011f5c6b0 : 0xffffff801203ba60
0xffffff8011f5c6d0 : 0xffffff80120fe449
0xffffffe0d78b3e40 : 0xffffff80120fe60f
0xffffffe0d78b3e70 : 0xffffff80126a0c98
0xffffffe0d78b3f60 : 0xffffff8012680d33
0xffffffe0d78b3fa0 : 0xffffff801203b18e

Process name corresponding to current thread (0xffffff85764f7e30): FreeRDPSandboxed
Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev

Mac OS version:
21A559

Kernel version:
Darwin Kernel Version 21.1.0: Wed Oct 13 17:33:23 PDT 2021; root:xnu-8019.41.5~1/RELEASE_X86_64
Kernel UUID: 19BD4E1B-0268-3EE0-BC66-91F035BC9429
KernelCache slide: 0x0000000011e00000
KernelCache base: 0xffffff8012000000
Kernel slide: 0x0000000011e10000
Kernel text base: 0xffffff8012010000
__HIB text base: 0xffffff8011f00000
System model name: MacBookPro16,4 (Mac-A61BADE1FDAD7B05)
System shutdown begun: NO
Hibernation exit count: 0

System uptime in nanoseconds: 226975762483
Last Sleep: absolute base_tsc base_nano
Uptime : 0x00000034d8cf4ac9
Sleep : 0x0000000000000000 0x0000000000000000 0x0000000000000000
Wake : 0x0000000000000000 0x0000000c58e0a63e 0x0000000000000000
Zone info:
Foreign : 0xffffff8028266000 - 0xffffff8028273000
Native : 0xffffff8059830000 - 0xffffffa059830000
Readonly : 0 - 0
Metadata : 0xffffffe9fdfc5000 - 0xffffffea1e2db000
Bitmaps : 0xffffffea1e2db000 - 0xffffffea2a2db000
last started kext at 24271918763: >driverkit.serial 6.0.0 (addr 0xffffff7faa6d1000, size 28672)

Hi,

We have a ticket opened for this and it is under investigation. We will post back when progress is made.

You can launch the problematic session externally in the mean time.

Best regards,

Not sure, but possibly related? I've been having crashes in the MS RDP client as well (WindowServer) since 12.0.1...
https://docs.microsoft.com/en-us/answers/questions/608142/remote-desktop-crashing-entire-system-on-almost-ev.html

Thanks, luke1.

Microsoft Remote Desktop APP works fine on my MBP 16 2020 with Radeon Pro 5600M 8GB graphics on MacOS Monterey. I do not have any crashes with this app (Version 10.7.0 (1933)) so far. It only occurs if I am using the Devolutions RDM app with exactly the same result you are describing in the post on the Microsoft forum.

Hi devolutions49,

Just as a follow up, we reproduce the crash internally. We are currently investigating the issue.

Best regards,

Great, Xavier. Thank you so much. Appreciated.

Hello devolutions49

We're able to reproduce the crash but we're still trying to nail down the specific cause.

Can you try adjusting the "Codec level" of a problematic connection (in the advanced tab) to "6" and tell us if you still experience an issue?

Thanks and kind regards,

Hi Richard,

I did not face any crashes at Level 6 and also Level 7. But the performance is bad. At Level 8 the system is crashing all the time immediately after the Windows Desktop screen appears.
Hope, that helps.

Regards,
Tiemo

Hi Tiemo

Thanks for getting back to us. It helps narrow down the source of the issue. For now, you could consider it a workaround (although I understand the performance is worse). We are working on a fix but it's complicated. We'll post back once there's an update.

Thanks and kind regards,

No problem. I am fine with Microsoft Remote Desktop App for now.

If you need further testing, please let me know.

Regards,
Tiemo

@devolutions49 the official MS RDP app also crashes WindowServer and forces a logout about 50-75% of the time when connecting. So that's no solution.

@lukue1: I am using it since my upgrade to Monterey for more than 10 hours a day for several remote OS (all Windows). I have never had any crashes, yet. Not sure, why you have so many issues with it. Maybe it is graphics / hardware dependent. I am on M5600 graphics. Different driver?

MS RDM is running right now and I started the remote session 10 hours ago in full screen mode on a second desktop.

Hopefully, MS will find the cause for your problem, soon. I keep my fingers crossed.

Hi,

A new version of RDM (2021.2.7.0) is now available with a fix for the system crash (kernel panic).

Please, do not hesitate to post back if you still experience the issue, or for any other issues.

Best regards,

Hi Xavier,

looks good to me. It's time to say THANK YOU to you and your team! Good job!

Best regards,
Tiemo

Glad to hear it works!

A special thanks to Richard Markiewicz who adventured in unbelievable depths to fix this!

Please, do not hesitate for any other issues you may find while using the app.

Best regards,