Bug: WSUS Catalog import failures (0x80131509)

Error

• Error: 0x80131509
• If you use a proxy, be sure that it is the same proxy being used by your Windows Server Update Services (WSUS) server
  
• Your WSUS server might not be configured correctly. Contact your WSUS administrator.

Affected

• WSUS 5.0 (Windows Server 2016)

Solution

• Add the following Registry-Key to force .NET 4.0 (WSUS) using TLS 1.2 -> open a cmd as Administrator:

reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319 /V SchUseStrongCrypto /T REG_DWORD /D 1

• Restart you WSUS

More Information:

• https://docs.microsoft.com/en-us/mem/configmgr/core/plan-design/security/enable-tls-1-2-server