Thank you for posting back & the information.
When we wrote "we don't know what's *actually* happened, without analysing the phone", we literally meant exactly that, we were not in any way saying you did not know what had happened or what the outcome of installing KSK was.... But, here in the Community, it's not possible to receive data, or do any analysis of the phone; all that must be done by Kaspersky Support.
We're surprised that the KSK HQ experts have responded with that response.
Please share the outcome with the Community, when it's available?
Are there any particular steps that lead to this situation?
What operating system are you on? Which version of Kaspersky do you use?
Try cleaning cache in browsers, will it help?
Try clean boot (here is how for Windows 10), will it bring improvement?
And now is offline.. in my firewalll list missing another adresses. Kaspersky portal show offline devices.. https://ksos.kaspersky.com/ another solution? If unblock all blocking rules connect normaly.. But its not acceptable.. On factory PC blocking all 80 and 443 comunication. Without KASPERSKY adresses.. Need add adresses for KSOS? Thanks