KB5079473 fails on every reboot -- Undocked-Hypervisor CBS_E_PENDING in Parallels VM (7-day investigation with full CBS logs)
For engineering review only -- no callback needed
https://acrobat.adobe.com/id/urn:aaid:sc:US:869a71c8-ea72-4d9e-9b4e-e4b628f29f0f
I tried attaching the file, but it...
Environment:
Tahoe 26.3
Parallels Desktop 26 for Mac Pro Edition, version 26.2.2 (57373)
Apple Container 0.9.0 (https://github.com/apple/container)
Overview:
Apple Container is running on macOS, and the following DNS configuration exists on macOS:
/etc/resolver/containerization.box
---
domain...
Environment:
Host: macOS (15.7)
Parallels Desktop Version: 26.0.1 (57243)
Guest: Windows 11 Professional (latest cumulative update as of 13 September 2025)
Git Version: 2.51.0 (msys2-based)
Steps to Reproduce:
Create a fresh Windows 11 Professional VM in Parallels Desktop.
Install the latest...
Hi all -- I've been a Parallels Toolbox user for many years, and I'm encountering a persistent issue on macOS Sequoia with my Mac M4 Pro.
Every time my Mac activates the second display (an HDMI-connected TV), Presentation Mode auto-starts, even though:
• All Presentation Mode settings are...
On the Apple support forum I posted the following:
I recently installed macOS 15.3 and now my mac logs me off after a period of inactivity. I checked System Settings and the "Log out automatically after inactivity" is not set. How do I stop it from logging me off? Note that under Sonoma my...
The Linxu 6.12 kernel version is now in Debian Testing, and will be the new Long-Term Stable kernel as it was the last kernel released in 2024. As a result, many Linux distributions will be upgrading to it soon, if they have not done so already (as in the case of Debian).
The failure appears...
I'm encountering a persistent issue with file permissions in shared folders between macOS and my Windows 11 virtual machine on Parallels Desktop. Here's the situation:
No matter which OS I use to create a new file in the shared folder (like "Downloads"), whether it's macOS or Windows, the file...
Install Windows 11 and set the VM program to Parallels and check Enable nested virtualization, the installation fails to start and will change the macOS date to one month ago
macOS :14.5 (23F79)
Parallels Desktop 19 for Mac Pro Edition: 版本 19.4.1 (54985)
I have a lot of these messages in my Mac's log file, related to Parallels. "Windows 11 Parallels M3 Max" is the name of my Windows 11 VM.
24-06-01 15:30:26.583 TimeMach Failed to read capabilities for '/Volumes/[C] Windows 11 Parallels M3 Max.hidden', error: Operation not permitted
I conferred...
I have a misconfigured VM that will only boot into the virtual bios.
See screenshot
In this state, I am unable to shutdown the VM via the Action --> Shutdown menu option, it remains running.
This also means I am unable to reconfigure the machine, since it is technically still running.
The...
How to reproduce:
1. download vscode
2. use vscode to open any project on github , for example https://github.com/NodeBB/NodeBB (maybe optional? You can try use VSCode open any code file with code highlighting)
3. copy any text in vscode
4. see clipboard manager have ? in history
My Windows 11 ARM guest is preventing my MacBook Pro from sleeping, despite the guest OS being paused. I noticed the issue a few days ago after adjusting the VM's configuration with the goal of keeping it running in Coherence at all times with minimal impact. The following steps produce the...
There seems to be a bug in Parallels 19's "Network Conditioner".
I'm running a "Rocky Linux 8" virtual machine, and I've been experiencing a lot of timeouts on certain communications.
After some research, I found that this problem occurs when "Network Conditioner" is unchecked.
If this check is...
When the "Hide Menu Icons" is turned on the autohide feature of the Mac OS Dock can get stuck. Although it's difficult to make this happen consistently, I have posted 3 screen captures in this Stack Exchange post.
If you view the above, you will see that the Dock gets stuck (1) when the Hide...
Hi!
Found a strange bug in all versions after 18.0.3, the program can not start if there is no internet connection, when starting just hangs the window "Starting ..." and all, waiting for both 20 and 30 minutes, the window just hangs and does not go anywhere.
For me, the last working version...
Hi everybody,
I am struggling with a super annoying bug that makes parallels completely unusable for 3D games to me: In all 3D games I tested so far, mouse movement is limited to the sides, so that you can not turn around completely but are limited to a space of roughly 180° - so you can not...
Environment:
MBP 16 M1Max
Ver 18.0.0
When preferences - "show parallels icon in menu bar" is on, it acts normally.
When it is off, it leaves a blanking, which is very annoying.
like: