[Bug]: Guest Additions flapping

[ecerutti]

Version

7.2.4

Host OS Type

Linux

Host OS name + version

Linux Mint Debian Edition 7 Gigi

Host Architecture

x86

Guest OS Type

Windows

Guest Architecture

x86

Guest OS name + version

Windows 11 Pro 25H2 build 26200.6584

Component

Guest Additions/Other

What happened?

Virtualbox "Resource use" tab is greyed. Extension Pack version on the host exactly matches the VirtualBox application version. Guest additions on the guest matches the VirtualBox application version. CPU vmx flags on host is enabled.

Reviewing the logs, I found that the Guest Additions capability report constantly flaps between (0x0 -> 0x4) and (0x4 -> 0x0).

Logs filtered by the words "Guest Additions" :

00:00:06.810946 VMMDev: Guest Additions information report: Version 7.2.4 r170995 '7.2.4'
00:00:06.811494 VMMDev: Guest Additions information report: Interface = 0x00010004 osType = 0x0003E100 (Windows 11, 64-bit)
00:00:06.811941 VMMDev: Guest Additions capability report: (0x0 -> 0x0) seamless: no, hostWindowMapping: no, graphics: no
00:00:06.820103 VMMDev: Guest Additions capability report: (0x0 -> 0x0) seamless: no, hostWindowMapping: no, graphics: no
00:00:24.202040 VMMDev: Guest Additions capability report: (0x0 -> 0x4) seamless: no, hostWindowMapping: no, graphics: yes
00:00:24.202526 VMMDev: Guest Additions capability report: (0x4 -> 0x0) seamless: no, hostWindowMapping: no, graphics: no
00:00:24.208477 VMMDev: Guest Additions capability report: (0x0 -> 0x4) seamless: no, hostWindowMapping: no, graphics: yes
00:00:26.430828 VMMDev: Guest Additions capability report: (0x4 -> 0x0) seamless: no, hostWindowMapping: no, graphics: no
00:00:26.433041 VMMDev: Guest Additions capability report: (0x0 -> 0x4) seamless: no, hostWindowMapping: no, graphics: yes

I attempted to resolve the issue by performing the following actions, all without success:

• Enable I/O APIC
• Enable PAE/NX
• I changed the Paravirtualization option between None, KVM, Minimal, Legacy, and finally Default.
• I performed a clean reinstallation of the Guest Additions on the Guest OSas follow:

1. I uninstalled the Guest Additions.
2. Then I restarted in Safe Mode and ran the following commands from the command prompt:

rmdir /s "C:\Program Files\Oracle\VirtualBox Guest Additions"
del "C:\Windows\System32\drivers\VBox*.sys"

3. I reinstalled the Guest Additions while in Safe Mode.

• I changed the Chipset from "PIIX3" to "ICH9," reinstalling the Guest Additions between changes.
• I changed the TPM Version option from None to 2.0

VBox.log

How can we reproduce this?

I don't know how you can reproduce the issue. Perhaps installing Virtualbox 7.2.4 on an LMDE 7 and creating a virtual machine with Windows 11

Did you upload all of your necessary log files, screenshots, etc.?

• Yes, I've uploaded all pertinent files to this issue.