bc.googleusercontent.com Appendswrong info to query string and goes to 404

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Gardecor Incorp

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Nov 14, 2018, 1:23:50 PM11/14/18
to Google App Engine

SERVER vars:
[REMOTE_ADDR] => 35.236.192.28
[REMOTE_PORT] => 61840
[HTTP_USER_AGENT] => Mozilla/5.0 (Windows; U; Windows NT 5.1; pt-PT; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2 (.NET CLR 3.5.30729) which is Firefox 3.5 on XP

Whatever this is doing, it is appending
    'A=0
to the URL.

E.g., correct URL =


changes it to

That results in a 404 because the query string, me=yes, should be the correct var for the program to find the right page.

(1) What's happening? Is this really Google?

(2) If it's Google, then why doesn't Google quality check and correct what they are doing?

(3) Why doesn't the user agent reflect a bot?

(4) It's upsetting to find this during a debugging routine a long time after the program is coded and quality checked okay.
How can that be prevented in the future? How do I predict that Google will do something stupid like this.

Barry Hunter

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Nov 14, 2018, 6:57:01 PM11/14/18
to google-appengine
Traffic from 'bc.googleusercontent.com' is originating from Compute Engine. 

so its unlikely to be google itself, although admitedly google employees can rent vps'es too.

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Milad (Google Cloud Platform)

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Nov 16, 2018, 8:53:52 PM11/16/18
to Google App Engine
Hello Gardecor,

I understand your concern about 'A=0'. However, I need further information to give you the best answer. What is the reproduction steps in:

A=0
to the URL.

E.g., correct URL = 


Can you please explain more about the issue? I'm looking for your reply.
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