Windows 2012 internet information server tls protocol defined fatal alert code is 46. I am Unable to connect to the webserver via https

Question

I am unable to connect to the webserver via https. I receive a not secure warning. any help is appreciated.

I have been getting this same error for the past few days (maybe longer). The event viewer shows the following

Log Name: System
Source: Schannel
Date: 14/10/2020 17:27:07
Event ID: 36887
Task Category: None
Level: Error
Keywords:
User: SYSTEM
Computer: 2012Web1
Description:
A fatal alert was received from the remote endpoint. The TLS protocol defined fatal alert code is 46.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Schannel" Guid="{1F678132-5938-4686-9FDC-C8FF68F15C85}" />
<EventID>36887</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2020-10-14T16:27:07.076665500Z" />
<EventRecordID>248877</EventRecordID>
<Correlation />
<Execution ProcessID="592" ThreadID="2240" />
<Channel>System</Channel>
<Computer>2012Web1</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="AlertDesc">46</Data>
</EventData>
</Event>

Answer 1

Something here may help.
https://forums.iis.net/t/1225015.aspx?My+web+IIS+server+event+log+is+full+with+schannnel+error

or also ask the IIS experts here in dedicated forums.
https://forums.iis.net/

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