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Beta dev build chrome ERR_HTTP2_PROTOCOL_ERROR with "traffic processing" enabled under network [Closed]

Go to solution Solved by Flood and Flood's wife,

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With the network setting “Traffic processing” - Inject script into web traffic to interact with web pages, enabled.
When I visit most sites with chrome, I cannot connect to the site and get the following error ERR_HTTP2_PROTOCOL_ERROR, even on reputable sites like trello.com

I am using Kaspersky Free on win 10
I am using the dev-build of Chrome Version 79.0.3945.16 (Official Build) dev (64-bit)
I have the Kaspersky Protection chrome extension enabled


Disabling traffic processing seems to do the trick. But I’m not sure exactly what that disables and how much it exposes my computer?
I believe this error might have to do with chrome’s strict same-site cookie/referrer/request blocking.

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Hello @Tai,


  1. Kaspersky does not support any dev or beta software
  2. Is ERR_HTTP2_PROTOCOL_ERROR visible is ChromeDev browser log or KIS?
  3. Have any Domain Security Policies been configured in ChromeDev browser?
  4. If you Clear Host Cache chrome://net-internals/#dns, exit the browser & restart, what happens? 
  5. Does the issue happen in Google Chrome 78.0.3904.70 (Official Build)? 
  6. KIS REPORTS, please select ALL EVENTS, select (timeframe) 24hrs or 7days, EXPORT the report, save as a text file (*.txt), attach to your reply please?
  7. I’ve just check trello using ChromeDev-79.0.3945.16, KPE30.112.62.0 installed & active, no access issues & no errors. 


    Thank you. 

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