Blank Advanced Settings Page
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
Problem
When navigating to Administration > System > Advanced Settings

Diagnosis
HAR file looks good.
Enabling safe mode didn't help
It is showing a blank page regardless of what browser is in use or even in incognito mode.
Not user (admin) specific.
Cause
In jpm.xml
file, all the lines with <admin-editable>true</admin-editable>
where all the advanced configuration options are located is removed.
Solution
Resolution
Adding back the lines with <admin-editable>true</admin-editable>
should show the Advanced Setting options.
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