Question 1 Replies 382 Views × Close popover nikhil kumar (nikhilk7251) Cognizant Associate Cognizant IN View Profile Send Message nikhilk7251 Member since 2016 56 posts Cognizant Posted: November 8, 2018 Last activity: November 14, 2018 Posted: 8 Nov 2018 2:43 EST Last activity: 14 Nov 2018 1:46 EST Closed Solved SAML Assertion signature verification failed : SAML token security failure Getting the below error in tracer in tracer when I try to login via SSO user in pega. "AML Assertion signature verification failed : SAML token security failure". Checked the log and it says "Error while executing the Authentication Service activity : You're not authorized to access the xyz application ". Was able to login previously and no change was done but started to get this error. I have gone through the existing pega articles but seems this issue is not mentioned anywhere. ***Edited by Moderator: Pallavi to update platform capability tags*** Data Integration Java and Activities Security × Close popover Facebook Twitter Linkedin Email Copy Link Copied! Moderation Team has archived post, learn more × Close popover This thread is closed to future replies. Content and links will no longer be updated. If you have the same/similar Question, please write a new Question. Accepted Solution Posted: 2 years ago Posted: 14 Nov 2018 1:45 EST × Close popover nikhil kumar (nikhilk7251) Cognizant Associate Cognizant IN View Profile Send Message nikhilk7251 Cognizant replied to nikhilk7251 The issue is related to time mismatch between IDP server and Pega server.