When opening citrix cloud workspace URL for authentication, page redirects to accounts.cloud.com/core/error URL with error : Unable to Process Your Request : There was an unexpected error 
Transaction ID : xxxxx

• Configure the identity provider to automatically fetch the certificate used for signing SAML requests from citrix metadata . This will ensure service continuity even when there is a change in signing certificate from citrix .
• Metadata document can be obtained from SAML configuration page on citrix cloud console or from the following URL https://saml.cloud.com/saml/metadata 
• To find which citrix public key is used for signing certificate used in SAML request to the IDP , SAML tracer extension can be used in google chrome.

Problem Cause

• Citrix changes the certificate used for singing the SAML requests periodically when it is about to expire or due to other security reasons.
• SAML IDP should be configured correctly to automatically fetch the certificate key from the citrix metadata for SAML 2.0