Getting HTTP Error Code 500 for All REST Requests

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

Symptoms

  1. All REST requests resulted in HTTP Error Code 500

  2. JIRA is also affected

  3. Using IIS 5.1 for both JIRA and Confluence standalone

The following appears in the HTTP capture:

1 2 3 4 5 6 7 8 9 10 HTTP/1.1 500 Server Error Server: Microsoft-IIS/5.1 Date: Thu, 18 Aug 2005 20:57:39 GMT Connection: close Content-Type: text/html Content-Length: 87 <html><head><title>Error</title></head><body>The parameter is incorrect. </body></html>

Cause

This is a known bug in Tomcat IIS Connector for IIS 5.1.

Resolution

Upgrade to IIS 6 or later.

Updated on April 8, 2025

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