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lepidoptera2020-08-21 11:52:47
Browsers
lepidoptera, 2020-08-21 11:52:47

How to convince the client browser that the certificate is valid?

Hello! The situation is as follows...
We have a corrupt site that is located on two hostings, one active (hereinafter referred to as Hosting A), on the other - a mirror just in case (hereinafter referred to as Hosting B).

Host B was once active and had a commercial SSL certificate ordered. Then the site was transferred to Hosting A. The certificate expired, we renewed it on Hosting B, and the certificate files were transferred to Hosting A, they worked fine there.
Now we are abandoning Hosting A for some reason and moving the site back to Hosting B.

In most cases, everything is fine. But it turned out that some browsers (Chrome, maybe there are others) for some clients write the following:
"The credentials we received from site XXX are different from those it normally sends. It is possible that a malicious site is trying to impersonate site XXX... The site cannot be opened at this time." And Chrome really does not open the site.

Can we do something on the server side? Is there any way to convince the client browser that the changed certificate is correct?

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