We have Symantec Endpoint Protection ver14.2.758.0000 and Endpoint Encryption Suite 11.1.2 on a Windows 2012r2 server. We recently perfomed a security scan and detected TLS version 1.0 was enabled. Our solution was to deprecate TLSv1.0, deprecate TLSv1.1 and enable TLSv1.2. Within a few days, clients who have accessed a specific URL routinely lost their connection. We reversed the TLS remediation and restored the client’s access to their URL.
Question: Why did this happen? How should we have performed the remediation of TLS. In doing an Internet Search I found indications that Symantec EndPoint might have been the source of the problem. Is that correct?