Update existing Jira Cloud Integration: Atlassian has announced an end to cookie-based authentication and basic authentication with passwords for Jira Cloud. To continue using using Jira Cloud: You must change the existing password-based Jira integration authentication to the new API token-based authentication by April 29. After this date, password-based authentication may no longer work. Support for token-based authentication is included in the 5.7 version of TestRail.
To enable API token authentication for your instance, follow these steps:
Generate an API token using the Atlassian site
In TestRail, go to the Administration > Integration area, and click Configure JIRA Integration.
From the Jira Version dropdown, select Jira Cloud.
Enter your Jira user email address and API token into the JIRA Email Address and JIRA API Token fields, and then click Enable JIRA Integration
Remove the pre-existing jira_user and jira_password user variables. WARNING: This will remove all existing Jira integration usernames and passwords from your TestRail users. They will need to follow step 1 above to generate their own API token, and then enter their username and API token combinations in their TestRail User Settings page.