Unable to Left Click Download an Attachment in Chrome Browser After Upgrade
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
Issue occurs after upgrading JIRA
Only Chrome browser is affected. Internet Explorer and Firefox works just fine.
Left click to download (or view) attachment will show gibberish writings similar to the following
Diagnosis
In the attachments panel in the JIRA Issue View page, click on the downwards arrow and choose Manage Attachments will show the Mime Type to be application similar as the following
Resolution
Please create an XML backup of JIRA or Database backup of the JIRA database as an act of pre-caution. The following steps will ran direct database updates to one of the JIRA table, if you do not know what you are doing, please contact your Database Administrator for assistance.
Run the following SQL query against JIRA database to verify the issue again. Where you will see the mimetype resulting
applicationinstead of the correct Mime Type1select id,mimetype,filename from fileattachment where mimetype='application';After confirming the above, assuming the affected file is a ZIP file type format, ran the following SQL update. Where the ID was obtained from the above.
1update fileattachment set mimetype='application/zip' where id=10300;ℹ️ You may find more information on the correct mimetype for each filetype in
$JIRA_INSTALL/atlassian-jira/WEB-INF/classes/mime.types
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