Multipass on MacOS silicon - Version: Tahoe 26.0

Project Discussion Multipass
1

I’ve updated my Macbook Air M1 & Mac Mini M2 to the latest version of MacOS Tahoe 26.0.

I had multipass instances running on both before. The image for all of the instances is: Ubuntu 24.04 LTS

Now it is not working on either. I’ve had these problems:

$ multipass shell pluto
start failed: The following errors occurred:
pluto: timed out waiting for response
E0925 12:39:35.777476000 8305510400 backup_poller.cc:122] run_poller: UNKNOWN:Timer list shutdown {created_time:“2025-09-25T12:39:35.777422+01:00”}

$ multipass launch --cpus 2 --disk 4G --memory 2G --name thor --mount /users/:/mnt/
launch failed: Downloaded image hash does not match

$ multipass list
Name State IPv4 Image
hera Unknown – Ubuntu 24.04 LTS
juno Unknown – Ubuntu 24.04 LTS
$ multipass stop hera juno;multipass shell hera
start failed: The following errors occurred:
hera: timed out waiting for response

2

Hi @peter-h-m-brooks, thanks for letting us know. I suspect you are experiencing Mac OS 26: can not create a new "Ubuntu 25.10" Instance · Issue #4383 · canonical/multipass · GitHub. The image version shouldn’t make a difference.

Could you please compare your logs with what’s reported in that issue and let us know if it matches? Otherwise, please open a new bug report, filling in the info in the template? That would help us make sense of it.

We use GitHub to track our issues, so let’s follow up in either ticket there please, if you don’t mind.

2 Likes
3

Thank you for your help. Eventually, I found that git had got the 4.4.4.4 set as its DNS host:

/usr/bin/git config --global --unset remote.origin.proxy
/usr/bin/git config --list | grep proxy

Fixed it.

Now, after completely deinstalling brew, I’m reinstalling everything.

I’m hoping this will fix multipass