Cannot connect to L2TP server from Windows 7: no suitable proposal found

RouterOS General
1

Hello,

CCR1009, 6.43.8
cannot connect to L2TP server from Windows 7 and Windows 2008 R2.

ipsec, error no suitable proposal found.
ipsec, error x.x.x.x failed to get valid proposal.
ipsec, error x.x.x.x failed to pre-process ph1 packet (side: 1, status 1).
ipsec, error x.x.x.x phase1 negotiation failed.

I tried all the algorithms, but without success
Image_l2tp2.png
Image_l2tp1.png

2

please post the whole config here (by /export hide-sensitive command)
please enable ipsec debug blog (by /system logging add topics=ipsec) command

and in case there is NAT between server and client: google “AssumeUDPEncapsulationContextOnSendRule”

3

in l2tp server setting ,there has ipsec choice
l2tp1.png

4

Thanks, it helped!