here are 2 DMP files, hope they help

tried to open canary in incognito, same result

Deleted: 1bae9a8f-5a31-416a-9b60-3eda9cc04d76.dmp 5.4 MB

1bae9a8f-5a31-416a-9b60-3eda9cc04d76.dmp 5.4 MB Download

Deleted: 1ccd407d-6008-490a-94ab-c838437e74e2.dmp 5.3 MB

1ccd407d-6008-490a-94ab-c838437e74e2.dmp 5.3 MB Download

57.0.5979.0 downloaded automatically, canary now loads properly

All extensions are missing from extension list.

Adding extensions has been disabled in 57.02979.0  should I try to enable, if so, how?

just to confirm, when I try to see extensions in 57.0.2981.0 I see:
Boo… You have no extensions :-( Want to browse the Chrome Web Store instead?

when I try to see plugins in 57.0.2981.0 I see:
"this site cannot be reached"  see attached screenshot

Deleted: canary 57.0.2981.0 plug ins.JPG 20.4 KB

	canary 57.0.2981.0 plug ins.JPG 20.4 KB View Download

just to confirm 57.0.2983.0 has the same results for extensions and plug ins as 2981

@lcapelis-- Could you please provide us the crash id and also try a system restart and chrome canary re-install and try with a fresh chrome profile without any extensions , and write us your observations .

Thanks!

@hdodda-- There were no crash files on the dates I tested the 4 versions that kept closing on their own, but there were the 2 DMP files I have provided in the opening post, and comment 1. I did try reloading canary on all four versions 57.0.2975.0, through 2978.  The plugins and extensions anomolies showed up in 2979 through now 2984 as mentioned in comments 4 and 6.  

?? 

Thanks

just to confirm: 57.0.2985.0  has the same results for extensions and plug ins as 2981 (see comment #4, 

thanks

just to confirm: 57.0.2987.0  has the same results for extensions and plug ins as 2981 (see comment #4) 

thanks

Just to confirm:  57.0.2987.4  has the same results for extensions and plug ins as 2981 (see comment #4) 

thanks

Just to confirm:  57.0.2989.0 has the same results for extensions and plug ins as 2981 (see comment #4) 

thanks

Your dump file from #4 loaded in VS2015 shows the callstack that crashes while performing sync in ConnectIfReady function inside shared_model_type_processor.cc

This function was reworked in r442978 (57.0.2979.0) to avoid crashes so the problem you're seeing after that seems to be caused by something else. So far it sounds like a corrupted profile or the entire "User Data" directory in %LocalAppData%\Google\Chrome

FWW, the stable version of version 55.0.2883.87 m works correctly; I am unsure  what the remedy ought to be now (?) thanks for the response.

 Just to confirm:  58.0.2990.0 has the same results for extensions and plug ins as 57.0.2981.0 (see comment #4) 

thanks

I remember having a problem with Chrome not starting at all after the auto-update and I fixed it by running Chrome once with --reset-variation-state in the command line to "force a reset of the one-time-randomized FieldTrials on this client, also known as the Chrome Variations state."

I uninstalled canary 58.0.2990.0 with Windows programs, installed 58.0.2990.1

Now extensions are present, like in stable chrome version, but chrome://plugins/chrome://plugins/
still returns the error message contained in the jpeg file attached to comment #4

I am unfamiliar with how to accomplish your instructions in comment #16, sorry . . I cannot find a tutorial on the syntax, how to start canary with a command line modification . . sorry.

Just to confirm:  58.0.2991.0 has the same results for plug ins as 57.0.2981.0 (see comment #4, and attached jpeg) 

thanks

Deleted: canary 57.0.2981.0 plug ins.JPG 20.4 KB

	canary 57.0.2981.0 plug ins.JPG 20.4 KB View Download

Just to confirm:  58.0.2992.0 has the same results for plug ins as 57.0.2981.0 (see comment #18)

Just to confirm:  58.0.2994.0 (Official Build) canary (64-bit) has the same results for plug ins as 57.0.2981.0 (see comment #18, and attached jpeg) 

thanks

Just to confirm:  58.0.2996.0 (Official Build) canary (64-bit) has the same results for plug ins as 57.0.2981.0 (see comment #18) 

thanks

58.0.2998.0
Just to confirm:  58.0.2998.0 (Official Build) canary (64-bit) has the same results for plug ins as 57.0.2981.0 (see comment #18) 

thanks

Please forgive my ignorance, I was unaware Dev channel was experimenting with a disabled plugins page, as well as DRM . . 

Thank you for providing more feedback. Adding requester "hdodda@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Reporter@ - As per your comment #23 can we close this bug?

Absolutely, this "bug" is no longer relevant, and should be closed

Thank you for providing more feedback. Adding requester "brajkumar@chromium.org" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Thanks for the update.Closing this as of now, please report a new issue if you see any issue using chrome in future.