Portable-VirtualBox 7.1.x (Test Build) observations

[alphastar868]

TL;DR

The 7.1.6 Changelog seems to suggest that there are still some issue(s) with Win11 guests, so I decided to try a Test Build with Virtualbox 7.1.7.167852 and Portable-VirtualBox.

Notes

After installing the rollback edition (Portable-Virtualbox 7.0.12.2 and Win11 Oct'24 ISO (OS Build: 26100.1742), started getting:

• BugCheck 5c {110, 5250631, 14, ffffffffc0000001} similar to this and this
• Guest Additions capability report: (0x0 -> 0x0) seamless: no, hostWindowMapping: no, graphics: no like this

.. along with some error that indicates that the VM appears to be no longer responding.

I tried this, thinking that it was related to Processor or Acceleration settings or potentially Hyper-V - like here.

VBox 7.1 Security Change?

After upgrading Portable-VirtualBox to 7.1.x release, I started getting errors stating that VBoxSrv is not a member of the TrustedInstaller group. (I then copied my new 7.1.7.x Portable-VirtualBox7 folder to C:\Program Files\Oracle\ to bypass).

Bug? - Portable-VirtualBox builds delete the Portable .EXE

Also, it seems that using the following sequence causes Portable-Virtualbox7.exe to get deleted from the Portable-VirtualBox7 folder (after build.bat custom version of Portable-VirtualBox7_v7.1.7.167776 and 7.1.7.167852):

1. Run build.bat to build Portable-VirtualBox using Test Build 7.1.7.167852 per BUILDING.md
2. Run extracted Portable-VirtualBox7.exe file
3. Click Download button
4. Select Extract 64-bit and Run after extraction (optional)
5. Portable-VirtualBox7.exe is deleted, but Virtualbox.exe and folders exist (wrong file gets deleted?)

I simply re-ran my Portable-VirtualBox7 build .exe to re-extract the .exe again.

Good News

While 7.1.7.167776 seemed to have issues with rebooting Win11 guests (i.e. high vCPU at 100% and frozen vDisplay - manual PowerOff and PowerOn required), but Virtualbox 7.1.7.167852 seems to work fine for me. Was able to successfully update to KB5052093 (and Windows 11 OS Build: 26100.3323) with multiple successful reboots.

Here's hoping the next VB/Portable-VirtualBox7 release will be Win11-stable/friendly...

Thanks!