Windows 10 Schannel The following critical warning was received: 70

Question

 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="2024-01-23T06:27:44.141075100Z" />
    <EventRecordID>279833</EventRecordID>
    <Correlation />
    <Execution ProcessID="716" ThreadID="1036" />
    <Channel>System</Channel>
    
  </System>
  <EventData>
    <Data Name="AlertDesc">70</Data>
  </EventData>
</Event>

Answer 1

Hello hzj, Thank you for posting in Q&A forum. This error is caused by the Schannel protocol. You can check the Windows Event Viewer for SChannel events to obtain detailed information about communication issues between the server and client devices. Search for SChannel related settings in Group Policy, such as CipherSuite and KeyExchangeAlgorithms, and check for any unsafe configurations. It is recommended to install any available updates on Windows 10. Updates can fix known issues and provide security patches to protect the system. You can check the Error codes or Alert Codes in your case further based on the links below. SSL/TLS Alert Protocol & the Alert Codes | Microsoft Learn Schannel Error Codes for TLS and SSL Alerts - Win32 apps | Microsoft Learn I hope the information above is helpful. If you have any questions or concerns, please feel free to let us know. Best Regards, Daisy Zhou

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