VPDN Failed to get session from socket handle 61000001

[sumapaypp88]

same error

[RachelGomez161999]

Ways To Fix The VPN Authentication Failed Error 
Reboot Your Computer. Sometimes, the simplest solutions are the best. 
Disable Your Firewall. 
Try a Wired Connection. 
Use a Different VPN Protocol. 
Try an Alternate DNS Server. 
Try a Different WiFi Network. 
Connect to a Different VPN Server. 
Reinstall Your VPN.

Regards,

Rachel Gomez

[MHM Cisco World]

https://quickview.cloudapps.cisco.com/quickview/bug/CSCsl38029

check this bug 

[sumapaypp88]

how i can clear last sessions on router or how i can changer max number for sessions

[sumapaypp88]

i have reload router but same error

[MHM Cisco World]

vpdn session-limit sessions
what is the Router model you use ?

also as mention in the bug detail this only seen when  debug l2tp error is enable, 
are VPDN work correctly ?

[sumapaypp88]

i have set vpdn session-limit  100

it is same error 

i use l2tp vpn

it is connected in my windows but no ping to cisco interface ip

and from router i can not ping to my  client ip

my cisco ios version 17

[MHM Cisco World]

show ppp all
show l2tun session & tunnel 

share here
note:- hide any public IP and Password 

[sumapaypp88]

this is client ip

192.168.64.109

from router no ping on it

[sumapaypp88]

[MHM Cisco World]

under analysis there is  fails with IPCP+ and this meaning there is some PPP feature is failed. 
show ppp interface virtual-access v2.1

please share output of above  

[sumapaypp88]

ip address is changed to 192.168.64.110 > it is pool

[MHM Cisco World]

MRRU are you config any PPP multilink ? can I see the config of virtual-template ?

[sumapaypp88]

interface Virtual-Template8
ip unnumbered Loopback2
ip nat inside
peer default ip address pool mvpnco
ppp authentication ms-chap-v2
ip virtual-reassembly
!

if u can edit plz

[MHM Cisco World]

for  router little only one command need to add 

interface Virtual-Template8
ip unnumbered Loopback2
ip nat inside
peer default ip address pool mvpnco
ppp authentication ms-chap-v2
ip virtual-reassembly
no ppp multilink 

https://www.cisco.com/c/en/us/support/docs/dial-access/virtual-private-dialup-network-vpdn/200450-Setting-up-L2TP-Tunnel-between-a-Windows.html

but there are some option need to check in Windows,
1-LCP extension <<- this need to enable 
2- Data encryption <<- this need to be no encryption allowed since you not run L2TP/IPSec 

do thic change the check again