WSUS Console Error Unable to connect via the remote API

Windows Update Services Console Keeps Crashing | Error Unable to connect via the remote API

Reference Event –

Log Name:      Application
Source:        Windows Server Update Services
Date:          12/4/2017 9:17:51 PM
Event ID:      7032
Task Category: None
Level:         Warning
Keywords:      Classic
User:          N/A

Description:
The WSUS administration console was unable to connect to the WSUS Server via the remote API.

Verify that the Update Services service, IIS and SQL are running on the server. If the problem persists, try restarting IIS, SQL, and the Update Services Service.

The WSUS administration console has encountered an unexpected error. This may be a transient error; try restarting the administration console. If this error persists,

Try removing the persisted preferences for the console by deleting the wsus file under %appdata%\Microsoft\MMC\.
System.IO.IOException — The handshake failed due to an unexpected packet format.

Source
System

Stack Trace:
at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result)
at System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.ConnectStream.WriteHeaders(Boolean async)
** this exception was nested inside of the following exception **
System.Net.WebException — The underlying connection was closed: An unexpected error occurred on a send.

Source
Microsoft.UpdateServices.Administration

Stack Trace:
at Microsoft.UpdateServices.Administration.AdminProxy.CreateUpdateServer(Object[] args)
at Microsoft.UpdateServices.UI.SnapIn.Scope.ServerSummaryScopeNode.GetUpdateServer

(PersistedServerSettings settings)
at Microsoft.UpdateServices.UI.SnapIn.Scope.ServerSummaryScopeNode.ConnectToServer()
at Microsoft.UpdateServices.UI.SnapIn.Scope.ServerSummaryScopeNode.get_ServerTools()

On Windows 10 | It was failing with 0x80244022 | Server Busy

Solution –

• Verified Sufficient CPU / RAM
• Verified Anti virus was skipped to Scan Contentdir and Targetdir

Computer\HKEY_LOCAL_MACHINE\Software\Microsoft\Update Services\Server\Setup

• Increased Private Memory limit for WsusPool to 10 GB in my case. for 3000 endpoints.