Event ID - 20077

Event Id20077
SourceRemoteAccess
DescriptionAn error occurred in the Point to Point Protocol module on port COM1. The remote computer does not support the required encryption type.
Event InformationAccording to Microsoft:With the release of the 128-bit Service Pack 3 (SP3) for Windows NT 4.0, RAS clients can now negotiate 128-bit RAS data encryption with a Windows NT 4.0 RAS server. Normal RAS data encryption is 40-bit. RAS clients that can take advantage of 128-bit data encryption are Windows NT Server or Workstation 4.0 with SP3 128-bit and Windows 95 Dial-Up Networking 1.2 128- bit.
If you upgrade a Remote Access Service (RAS) server that uses 128-bit encryption to Routing and Remote Access Service, you will have only 40-bit demand-dial and RAS encryption. The following information explains how to restore 128-bit encryption with Routing and Remote Access Service.
Reference LinksHow to Force 128-bit Data Encryption for RAS

Enabling 128-bit Encryption for Routing and Remote Access

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