https://live.paloaltonetworks.com/t5/general-topics/no-proposal-chosen-ikev1/m-p/1262544#M126904 <P>After upgrading to panos preffered version 12.1.7-h3 my ikev1 ipsec tunnel with ipsec crypto md5,3des,nopfs is not coming up , knowing that ike phase 1 is successful but ike phase 2 is giving no proposal chosen error , the algorithms matches the other peer and i tried downgrading the tunnel came up, i would appreciate any help</P> Sun, 23 Aug 2026 10:43:31 GMT Esameldin 2026-08-23T10:43:31Z https://live.paloaltonetworks.com/t5/general-topics/no-proposal-chosen-ikev1/m-p/1262544#M126904 <P>After upgrading to panos preffered version 12.1.7-h3 my ikev1 ipsec tunnel with ipsec crypto md5,3des,nopfs is not coming up , knowing that ike phase 1 is successful but ike phase 2 is giving no proposal chosen error , the algorithms matches the other peer and i tried downgrading the tunnel came up, i would appreciate any help</P> Sun, 23 Aug 2026 10:43:31 GMT https://live.paloaltonetworks.com/t5/general-topics/no-proposal-chosen-ikev1/m-p/1262544#M126904 Esameldin 2026-08-23T10:43:31Z