# Windows – How did the Google Chrome get switched to the “dev-m” channel

I have a typical installation of Google Chrome on my personal Windows 7 PC. I have never had trouble with automatic updates.
This evening I noticed some new behavior, so I went to the "About" page and saw some unusual information. The latest version is listed as 38.0.2125.111 dev-m and there was additionally a message that said "Updates have been disabled by administrator". (I have full administrator access and I have never disabled updates).

Based on some searching, I fixed the "disabled updates" issue by changing the value of "UpdateDefault" from 0 to 1 in the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Update. My About Page currently says "Google Chrome is up-to-date" again.

However, I'm curious about the "dev-m" part of the version number. I have never installed Chrome Canary or anything like that. Is "dev-m" supposed to be part of the version number in the stable normal release? If not, how did I get onto the dev-m update path and how do I get off of it?

Fuller explanation of symptoms:
I returned to my desk to find that Chrome was open with all of my typical tabs open, as well as the settings page for an Extension (which I foolishly closed before remembering which one it was). I did not think much of this, assuming that I had forgotten to close the browser earlier.
I closed Chrome and re-opened it and noticed that instead of the "head icons" in the upper left to switch profiles, there was a "name dropdown" on the upper right with different behavior. I also noticed that google.com was listening for "OK, Google" from my microphone which also was a new feature. This is why I went to look at the version number in the first place.
Upon reinstalling the stable version (see comments and my own answer), these 2 features were reverted.

I also noticed just now that one of my extensions — "Notes for Gmail" — has been automatically disabled by Chrome saying it may be infected by malware. This could possibly be related to my installation of Chrome getting screwed up.

UPDATE: This happened again, without explanation, a few weeks later!
I closed the browser (running "stable" that I had reinstalled after asking this question), and reopened the browser a few minutes later without leaving my desk and it was suddenly showing up as the dev-m version.
I had to shut down Chrome completely, reinstall the 'stable' branch from the website, and change the registry entry to reenable automatic updates.

Any clue as to what is going on?