As soon as I unchecked the additional two features Virtual Machine Platform and Windows Subsystem for Linux the notice went away and I started getting the python tasks.

Thanks Calathan.

I can confirm that I only started having issues when I started running Virtual Machine Platform and Windows Subsystem for LInux. Unfortunately I need these features enabled for a new software package I use for work.

Perhaps someone else who finds this thread can confirm they have success?

As soon as I unchecked the additional two features Virtual Machine Platform and Windows Subsystem for Linux the notice went away and I started getting the python tasks.

I can confirm this fix works. I disabled both as a test, and Rosetta started working again.

Here is something else that might be more directly related to you system:

If you at some point tried to run VirtualBox tasks with VT-x disabled BOINC remembers that. Right now the only way to make BOINC forget it is to edit one of its files.

First shutdown BOINC client, either select File -> Shutdown connected client or exit BOINC Manager and tell it to shutdown running science apps. Open Windows' Task Manager and make sure boinc.exe is not running.
Find BOINC's data directory, usually C:ProgramDataBOINC, and open client_state.xml file in Notepad (don't use other editors) and find the following line:

<p_vm_extensions_disabled>1</p_vm_extensions_disabled>

This comes directly from the BOINC website




Change the 1 to 0, save the file and restart BOINC. If the line is not in the file or it's already 0 you have some other problem.

Just wanted to chime in to say thanks for this info; had an Ubuntu vm on my homelab server (esxi 6.7) that started throwing the hardware acceleration notice, and this edit worked for me.

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Here is something else that might be more directly related to you system:

If you at some point tried to run VirtualBox tasks with VT-x disabled BOINC remembers that. Right now the only way to make BOINC forget it is to edit one of its files.

First shutdown BOINC client, either select File -> Shutdown connected client or exit BOINC Manager and tell it to shutdown running science apps. Open Windows' Task Manager and make sure boinc.exe is not running.
Find BOINC's data directory, usually C:ProgramDataBOINC, and open client_state.xml file in Notepad (don't use other editors) and find the following line:

<p_vm_extensions_disabled>1</p_vm_extensions_disabled>

This comes directly from the BOINC website




Change the 1 to 0, save the file and restart BOINC. If the line is not in the file or it's already 0 you have some other problem.

Just wanted to chime in to say thanks for this info; had an Ubuntu vm on my homelab server (esxi 6.7) that started throwing the hardware acceleration notice, and this edit worked for me.

I was too quick to claim victory; a task downloaded, ran and failed overnight with the same error. Reinstalling boinc and virtualbox didn't help, and the dev version of boinc for linux (v7.18.1) fails in the same way, just without the usual entry in Notices.
A few items of note:

BIOS virtualization options must be enabled for ESXi to run 64-bit operating systems.
vm configuration option to allow hardware virtualization acceleration passthrough is enabled
problem vm is Ubuntu 20.04.4 LTS and installed packages are up-to-date
a Windows 7 vm on the host successfully runs rosetta vbox tasks.

I'm having the same trouble. I tried the suggested, disabling Hyper-V and Hypervisor and it worked for a while. But, after a couple reboots, no more. I'm just going to attempt disabling the Virtual machine support too.