URLs that containing a plus symbol can't be displayed

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The content on this page relates to platforms which are not supported for JIRA. Consequently, Atlassian can not guarantee providing any support for the steps described on this page. Please be aware that this material is provided for your information only and that you use it at your own risk.


JIRA is behind IIS and when trying to access JIRA URLs that contain a plus symbol in it, the page doesn't bring JIRA content. Instead, to returns the message "The request filtering module is configured to deny a request that contains a double escape sequence".

The following appears in the screen:


By default, IIS prohibits any URL that contains a '+' character in the URL from being served.


Set IIS to allow double escaping for JIRA site. It can be done in three different ways:

  • Directly through IIS console as instructed in this documentation;
  • Or directly modifying the web.config file of the IIS Site, inside the <system.webServer> tag, add the following:

    <requestFiltering allowDoubleEscaping="true" />
  • Or via command line in the IIS server:

    %windir%\system32\inetsrv\appcmd set config "<JIRA_site_name_in_IIS>" -section:system.webServer/security/requestfiltering -allowDoubleEscaping:true

    (info) It may need to restart JIRA site in IIS.

Last modified on Feb 26, 2016

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