according toMicrosoftSupport documentation shows that KB4489868 contains only two known problems, but recent Microsoft updates indicate that after installing the cumulative update, it has been installed.WindowsSubsystem for Linux devices may have various failures. The official page reads: "After deploying the update, a stop error may occur if you try to start the Secure Shell (SSH) client program from Windows Subsystem for Linux (WSL) using the command line switch (ssh-A) or the proxy forwarding function enabled in the configuration settings."
The company explained that it was working on a solution and would provide fixes in future versions. But Microsoft officials did not provide any specific details, but foreign media speculated that the patch might be released in April during Tuesday's event day. At the same time, Microsoft also provides a temporary solution, which is to "disable forwarding authentication proxy connections via command line (ssh-a) or configuration settings."
Microsoft explained that Windows 10 cumulative update KB4489886 of Version 1709 had the same error, but the October 2018 update did not seem to be affected.