Remove TLS 1.1 from Web Admin HTTPS interface

Are you able to test with openssl command?
via Linux machine terminal/windows powershell > openssl s_client -connect X.X.X.X:4444 -tls1_1
if yes, could you share the results with us here ?

CONNECTED(00000003)
140091414586688:error:1409442E:SSL routines:ssl3_read_bytes:tlsv1 alert protocol version:../ssl/record/rec_layer_s3.c:1543:SSL alert number 70
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no peer certificate available
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No client certificate CA names sent
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SSL handshake has read 7 bytes and written 124 bytes
Verification: OK
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New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
Protocol : TLSv1.1
Cipher : 0000
Session-ID:
Session-ID-ctx:
Master-Key:
PSK identity: None
PSK identity hint: None
SRP username: None
Start Time: 1652186929
Timeout : 7200 (sec)
Verify return code: 0 (ok)
Extended master secret: no
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So, as you can see "Secure Renegotiation IS NOT supported" 
It did not connect, now try with TLS 1.2 >  openssl s_client -connect X.X.X.X:4444 -tls1_2 
=====
If a post solves your question please use the 'Verify Answer' button.

So, as you can see "Secure Renegotiation IS NOT supported" 
It did not connect, now try with TLS 1.2 >  openssl s_client -connect X.X.X.X:4444 -tls1_2 
=====
If a post solves your question please use the 'Verify Answer' button.