[me.kis.v2.scr.kaspersky-labs.com [Solved][Closed]]

That’s incorrect. Caching is necessary especially when it is part of form filing or an open session.

Yes, I know this. It's not necessary for the checking of URLs and content against me.kis.v2.scr.kaspersky-labs.com as this content will be constantly changing. I made no mention of the final domain being cached after the redirect is complete. Merely the local cache used for me.kis.v2.scr.kaspersky-labs.com and that domain only.

What Kaspersky did is incorrect. Kaspersky has NO right to instruct browsers anything! Period. 

I think you’ll find that if servers and webpages were unable or did not have the right to send your browser instructions, you’d find your web browsing experience to be more than limited. Considering there is literally a Cache Control option called no-cache, which instructs your browser to retrieve the content afresh, and not use the cache (more info here) Which would be perfect for a domain that is constantly being referenced by different content across days, weeks and months. 

Caching is not a violation of security.

Never said it was, read my post again. Carefully.

Moreover, how does this explain the problem with downloading? Or streaming? Both doesn’t work too.

Because the cached domain is still being referenced and the content being loaded mismatches what is locally stored. Which would easily be fixed if no-cache was set, as it would require the content to be downloaded again. Your browser still caches the H264/VP9 files streamed, whether you see it clearly or not.  

For the same website (or downloading the same content from Yahoo mail), it works on Mozilla Firefox and Chrome but not on Edge?

While Edge is based on Chromium/Blink, it is still a new browser and Microsoft have changed a lot of under-the-hood operations and key functions. As with any new development, it takes time for kinks to be ironed out. Microsoft even make it clear that even though Edge is compatible with a lot of Chrome functions, including the support for CRX extensions, does not mean that bugs or other oddities will not be encountered. 

This is obviously poor handling by Kaspersky. Edge browsers that we use are official build. As a software that runs as a security app on a Windows OS, it cannot claim incompatibility.

Anyway, my current subscription runs less than 30 days so I’ve already filed for a refund (which is being processed now). 

That’s your opinion and you’re entitled to it. All I have stated is that Shift+F5 bypasses the browser cache (which is correct) and  that no-cache could be set on the Kaspersky domain (which is also correct). The burden of proof is on you as the accuser to disprove what I've said. Just saying I’m incorrect and talking about your personal feelings on the subject rather than providing evidence to the contrary isn’t conducive to a positive and informative discussion.

I wish you luck for your refund.

[Why Kaspersky is mangling the https certificate check? - man-in-the-middle?? [Closed]]

You could also set an exception for your bank’s domain, which would avoid having to disable a feature and affecting your protection level.

[me.kis.v2.scr.kaspersky-labs.com [Solved][Closed]]

The reason why Shift+F5 works (which hasn’t yet been explained by anyone) is because it instructs your browser to bypass its local cache, and forces it to download fresh content from the internet. This means that the security gateway that Kaspersky is using to check websites is being cached by your browser, and when it tries to load this cache, it hangs because the cached content does not match the content you are trying to load.

 

There are a few solutions to this:

1. Kaspersky must update their code to instruct browsers NOT to cache the page.
2. Enforcing a permanent/temporary exception for affected domains (affects protection). 
3. Contacting web browser developers and asking them to hard-code a workaround (least likely to happen).