Unable to Login after migrating JIRA Cloud to Data Center

[Nevermind]

I recently migrated our JIRA instance from JIRA Cloud to JIRA Data Center. I followed the steps outlined in the official migration guide (link: https://confluence.atlassian.com/adminjiraserver/migrating-from-jira-cloud-to-data-center-applications-938846963.html\) to import the backup data into the new JIRA Data Center environment.

After completing the import process, I encountered an issue with accessing the system using the sysadmin account. The login attempt resulted in the following message:

<warning>
<message>Login form has been disabled on this instance.</message>
</warning>

I am unable to proceed further and require assistance to resolve this login issue. Thank you for your help.

[Nevermind · Accepted solution]

I fixed this by updating the table 

com.atlassian.plugins.authentication.sso.config.show-login-form

https://confluence.atlassian.com/jirakb/how-to-obtain-authentication-methods-via-a-database-sql-query-or-rest-api-in-jira-datacenter-1319567431.html

[Sudarsana G]

Few Things you can do is 

Config File Check:

• Check the jira-config.properties and seraph-config.xml files for any custom settings that might disable the login form.
  • These files are located in the <JIRA_HOME>/jira-config.properties and <JIRA_INSTALL>/atlassian-jira/WEB-INF/classes/seraph-config.xml.

• Reindex:

  • Sometimes, reindexing can resolve issues after migration. Reindex your JIRA instance to ensure all data is correctly indexed.

• Access the Database:

  • Connect to your JIRA database using a database client.

• Verify sysadmin Account:

  • Check if the sysadmin account is active and has the correct permissions.
  • SELECT * FROM cwd_user WHERE user_name = 'sysadmin';

[Nevermind]

Thanks for your suggestions.

Config File Check:

- I dont have <JIRA_HOME>/jira-config.properties

- <JIRA_INSTALL>/atlassian-jira/WEB-INF/classes/seraph-config.xml seems to be normal.

Reindex: How can we reindex without authentication?

Verify sysadmin Account: Yes, I have sysadmin account which is active