Slow Load for SSL in Chrome 90.0.* when authenticated

Sharon Parry asked on April 26, 2021 21:56

This is a version 12.0.87 portals website project, with aspx templates, running under SSL.

There is no issue with the website for public users - ie, if user is not logged in. However, since the latest Chrome update (version 90.0.4330.85) load time is dreadful if the user has logged in! It is occurring only in the Chrome browser. No problem at all with Firefox (latest update) or Internet Explorer.

The website has been running without any issue at all for the last 6 months. It only started with the latest Chrome update. If user hasn't updated Chrome, there are no issues at all.

I've disabled "Use SSL for administration interface" which helps editors logged into Admin, but if user tries to navigate live site, it's almost impossible - can sometimes take 30 seconds or more to load a page!

I've got 2 other version 12 websites, and this problem doesn't occur for authenticated users with either of them.

Can anyone give me some hints about what might be causing this?


Recent Answers

David te Kloese answered on April 29, 2021 13:31

Can you reproduce it locally? In that case any statistics from either browser or Kentico Debug to see what or what section is causing the delay.

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Sharon Parry answered on April 30, 2021 07:27

Hi David,

Re: reproducing locally - no it doesn't happen locally, even remoting into the server and using Chrome directly on the server. Have enabled debug and can't spot anything specific causing the issue.


Just today, the same issue seems to have started with one of my other version 12 sites - a very simple site with no custom development whatsoever. A secured "members" area, but it contains only stock-standard content pages with security applied.

AND I've just had a call from my hosting support guy, who tells me he's been contacted by one of their clients who is experiencing extremely slow upload times when using latest Chrome! (Nothing to do with a Kentico site.) So I think the issue seems to be something to do with the latest Chrome update.

My next step to try and pinpoint what is causing it is to create a completely clean site, no content in it or anything, and just start adding stuff bit-by-bit and and try and figure out the exact point where the delays start.

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Sharon Parry answered on May 19, 2021 02:22

Finally resolved! Upgraded the web server from 2012 R2 to 2019 and problem solved.

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