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Cisco VPN Error 27850 on Windows 10

Hello again! Today I wanted to install Cisco VPN Client on my Windows 10 machine but I got always error 27850. I found a knowledge base article that you need to install DNE Update. You can find it here:

If you have install problems. Follow the installation guide for the registry changes. Add a DWORD32 into HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Network with the name “MaxNumFilters” and value 14 and restart your machine. When you have problems with error reason 422, follow this instruction.


I got adapter error messages while connecting. I installed and started (it tolded me that Cisco VPN client is using the DNE function. I cleaned it up anyway, did a restart, installed DNE again ( 32-Bit / 64-Bit). After a new restart I could connect via Cisco VPN)

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