Unable to Retrieve Attachment or Insert Into a 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
Symptoms
Attachment can't be retrieved or inserted into a page. The following warning message appears on the page:

Diagnosis
This issue is not affected by a custom layout or velocity changes as per the following KBs:
Cause
Reverse proxy is configured with http compression (gzip).
Solution
Resolution
Remove/disable gzip completely.
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