I am running protractor tests, and within the last couple days started getting this error:
WebDriverError: unknown error: cannot get automation extension
from unknown error: page could not be found: chrome extension://aapnijgdinlhnhlmodcfapnahmbfebeb/_generated_background_page.html
After some research, I tried updating protractor but I was already on the latest version (5.1.1). I checked to see if my chromedriver and chrome version are compatible and it looks like they are. I also updated my webdriver-manage to 12.0.4 but I still have the same problem.
-My chrome version is: 57.0.2987.133 (Official Build) (64-bit)
-protractor is: 5.1.1
-webdriver-manager is: 12.0.4
-chromedriver version: 2.2.6
https://github.com/SeleniumHQ/selenium/issues/3508
According to the comment from "JimmyKane" installing chromedriver v2.28 and removing the browser.manage().window().setSize() fixed it.