Scope of this is that out of dozens of accounts that work fine for rdwc sessions, there are two that do not. The connection starts but within a few seconds fails with, user facing side, 'we couldn't connect to gateway because of an error.' When running a capture, the key error appears to be:
"The connection generated an internal exception with disconnect code=GatewayProtocolError(52), extended code=<null>, reason=Gateway tunnel authorization failed with error code=2147965403""orgRD","RAS",04/05/2019,15:22:31,1,"DOMAIN\SAMACCOUNTNAME",,"UserAuthType:PW",,,,,,,,,,,,5,,,12,,,0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"TS GATEWAY AUTHORIZATION POLICY",2,"TS GATEWAY SERVER GROUP","xxx.xx.xxx.xx",,
"orgRD","RAS",04/05/2019,15:22:31,11,,,,,,,,,,,,,,,,,,,,,0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"TS GATEWAY AUTHORIZATION POLICY",2,"TS GATEWAY SERVER GROUP","xxx.xx.xxx.xx"",,
And this is from the NPS server:
"FILES","IAS",04/05/2019,15:22:31,1,"DOMAIN\USERNAME","domain.org/Users/FirstnameLastname","UserAuthType:PW",,,,,,,0,"xxx.xx.xxx.xx","orgrd",,,5,,,12,7,"RDpolicy",0,"311 1 xxx.xx.xxx.xx 03/19/2019 04:54:59 292",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"RDGWauth",1,,,,
"FILES","IAS",04/05/2019,15:22:31,11,,"domain.org/Users/FirstnameLastname",,,,,,,,0,"xxx.xx.xxx.xx","orgrd",,,,,,,7,"RDpolicy",0,"311 1 xxx.xx.xxx.xx 03/19/2019 04:54:59 292",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"RDGWauth",1,,,,
Any pointers in the right direction, or if anyone else has seen these errors, would be much appreciated!