attachment file cannot preview

[sina rahemi]

None of the attachment files in Confluence cannot preview. Need to download to view. 

Confluence Document Conversion Library and Confluence Files in Confluence already enable.

I also have check these Resolution but still didn't work.

https://confluence.atlassian.com/confkb/unable-to-preview-attachments-when-viewing-a-page-but-other-attachment-functions-work-without-issue-945542592.html 

Attachment Preview is not Working | Confluence | Atlassian Documentation

[Clark Everson]

Hi Sina,

Looking at your response you already followed this page: https://confluence.atlassian.com/confkb/unable-to-preview-attachments-when-viewing-a-page-but-other-attachment-functions-work-without-issue-945542592.html

But as outlined in that page if this doesnt work you need to reset all the plugins/apps in the database back to their original state: https://confluence.atlassian.com/confkb/how-to-reset-all-confluence-plugins-back-to-their-default-state-through-the-database-859509873.html

Best,

Clark