Now Microsoft is also stopping printing on Windows 11


Due to a security issue, Microsoft recently had a nightmare with printing on Windows 10, with each patch appearing to bring its own new printing issues.

Microsoft recently released KB5006674, the first post-release cumulative update for Windows 11, which fixed a network issue. At the time, there were no known issues, but it looks like Microsoft’s printing nightmare didn’t just stay on Windows 10 and now haunts Windows 11 as well.

Microsoft has identified a new printing issue published on KB5006674, where users experience the following issues while connecting to a print server, commonly seen in corporate settings:

  • 0x000006e4 (RPC_S_CANNOT_SUPPORT)
  • 0x0000007c (ERROR_INVALID_LEVEL)

The problem affects both Windows 10 and Windows 11.

Microsoft is working to find a solution to allow print clients to establish RPC packet privacy connections to Windows print servers using RPC over SMB.

In the meantime, administrators can mitigate the problem by ensuring that network security and VPN solutions allow print clients to establish RPC over TCP connections to the print server on the following port range:

  • Default boot port: 49152
  • Default end port: 65535
  • Port range: 16384 ports

Learn more about the workaround at Microsoft here.

Going through BipComputer

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