Selenium error when deleting cookies

Question

Has anyone encountered this issue when Selenium tries to delete cookies?

After months of working fine and not changing anything, we're suddenly hitting this error when running tests:

   System.InvalidOperationException : unknown error: Runtime.executionContextCreated has invalid 'context': {"auxData":{"frameId":"(FE3E5C7422F34F92AF238C0A8EBA89BF)","isDefault":true},"id":1,"name":"","origin":"://"}
      (Session info: chrome=64.0.3282.167)
      (Driver info: chromedriver=2.9.248315,platform=Windows NT 6.3 x86_64)
       at OpenQA.Selenium.Remote.RemoteWebDriver.UnpackAndThrowOnError(Response errorResponse)
       at OpenQA.Selenium.Remote.RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
       at OpenQA.Selenium.Remote.RemoteCookieJar.DeleteAllCookies()
       at FluentAutomation.CommandProvider.<>c__DisplayClass2.<.ctor>b__0()
       at System.Lazy`1.CreateValue()
       at System.Lazy`1.LazyInitValue()
       at FluentAutomation.CommandProvider.get_webDriver()
       at FluentAutomation.CommandProvider.<>c__DisplayClassc.<FindMultiple>b__a()
       at FluentAutomation.ElementProxy.get_Elements()

Answer 1

The error says it all :

System.InvalidOperationException : unknown error: Runtime.executionContextCreated has invalid 'context': {"auxData":{"frameId":"(FE3E5C7422F34F92AF238C0A8EBA89BF)","isDefault":true},"id":1,"name":"","origin":"://"}
      (Session info: chrome=64.0.3282.167)
      (Driver info: chromedriver=2.9.248315,platform=Windows NT 6.3 x86_64)

Your main issue is the compatibility between the Version of the Binaries you are using.

• You are using chromedriver=2.9
• Release Notes of chromedriver=2.9 clearly mentions the following :

Supports Chrome v31-34

• You are using Chrome Browser version 64.0

So there is a clear mismatch between the Version of the Binaries.

Solution

• Upgrade your ChromeDriver to recent ChromeDriver=2.35 level.
• As per the Release Notes of ChromeDriver=2.35 upgrade your Chrome Browser to Chrome v62-64 levels.
• If your base Chrome Browser version is too old uninstall Chrome Browser through Revo Uninstaller and install a recent released GA version of Chrome Browser
• Execute your Tests