Summary

Currently it appears the /rest/api/2/user (PUT) API doesn't provide facility to set users active or inactive, or perhaps the request representation doesn't include how this is done. Currently the API works fine for the following fields:

{
    "name": "eddie",
    "emailAddress": "eddie@atlassian.com",
    "displayName": "Eddie of Atlassian"
}

Can something like "Active": 1 or "Active": true be made available for this API as well to set the Activate or de-activate a user?

Workaround

Use Crowd REST API following these steps:

1. Go to User Management -> JIRA User Server
2. Create a new one with the below details (you can use your own values):
   • Application Name: app_name
   • Password: app_pwd
   • IP Addresses: Insert the IP/s (each on a separate line) of the client from where the subsequent REST call is to be run (to whitelist it so that the REST call is allowed to run)
3. Test with this command:
   • If Linux:

     curl -D- -u app_name:app_pwd -X PUT --data '{"name":"anyUsername", "active":"false"}' <jira-url>/rest/usermanagement/1/user?username=anyUsername -H 'Content-Type: application/json' -H 'Accept: application/json'
     

   • If Windows:

     curl -D- -u app_name:app_pwd -X PUT --data "{\"name\":\"anyUsername\", \"active\":\"false\"}" <jira-url>/rest/usermanagement/1/user?username=anyUsername -H "Content-Type: application/json" -H "Accept: application/json"
     

     Use the right username (anyUsername - 2 occurences) and replace <jira-url> with actual JIRA URL