WSUS Sync Falha no meio da sincronização

Question

A sincronização do WSUS com o servidor upstream começa bem e, de repente, falha no meio da sincronização:

Sync failed:  IOException: Unable to read data from the transport connection: 
An existing connection was forcibly closed by the remote host. --->
System.Net.Sockets.SocketException:An existing connection was forcibly closed 
by the remote host  at System.Net.ConnectStream.Read(Byte[] buffer, int32 offset,int32 size)
at Microsoft.UpdateServices.ServerSync.ServerSyncCompressionProxy.GetWebResponse(WebRequest webRequest) 
at System.WebServices.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) 
at Microsoft.UpdateServices.ServerSync.Webservices.ServerSync.ServerSyncProxy.GetUpdateData(Cookie cookie, UpdateIdentity[] updateIds) 
at Microsoft.UpdateServices.ServerSync.CatlogSyncAgentCore.WebserviceGetUpdateData(UpdateIdentity[] updateIds, List'1 allMetadata,List'1 allFleUrls,Boolean isForConfig) 
at Microsoft.UpdateServices.ServerSync.CatlogSyncAgentCore.GetUpdateDatainChunksAndlmport(List'1 allMetadata,List'1 allFleUrls,Boolean isForConfigData)
at Microsoft.UpdateServices.ServerSync.CatlogSyncAgentCore.ExecuteSyncProtocol(boolean allowRedirect))

    

Answer 1

Eu tive esse mesmo problema exato com um WSUS no 2012 R2. Por alguma razão desconhecida, desabilitar e habilitar o botão "Nível de Auto-Ajuste da Janela de Recepção TCP" fez com que o problema desaparecesse.

Eu fiz isso:

netsh interface tcp show global
Querying active state...

TCP Global Parameters
----------------------------------------------
Receive-Side Scaling State          : enabled
Chimney Offload State               : disabled
NetDMA State                        : disabled
Direct Cache Access (DCA)           : disabled
**Receive Window Auto-Tuning Level    : normal**
Add-On Congestion Control Provider  : none
ECN Capability                      : enabled
RFC 1323 Timestamps                 : disabled
Initial RTO                         : 3000
Receive Segment Coalescing State    : enabled
Non Sack Rtt Resiliency             : disabled
Max SYN Retransmissions             : 2

netsh interface tcp set global autotuninglevel=disabled
Ok.

Faça a sincronização do WSUS

netsh interface tcp set global autotuninglevel=normal
Ok.

Faça o WSUS sincronizar novamente