Hi Rajinder Singh,
Good day. I'm Jhun an independent advisor. In regards with your Outlook preview that does not display, this usually points to a browser, cache, or security setting issue rather than a problem with the files itself.
Try these solutions and see what will fix the problem.
A. Try a different browser.
- Open your email in: Microsoft Edge Google Chrome Firefox
- If previews work in another browser, the issue is browser-related.
B. Clear browser cache & cookies. Corrupted cache files often break OWA previews.
- In Chrome / Edge, Press Ctrl + Shift + Delete
- Select: Cookies Cached images and files
- Time range: All time
- Clear data.
- Restart browser.
C. Disable browser extensions. Ad blockers, privacy tools, and security extensions can block Outlook’s preview scripts.
- Open browser extensions page.
- Disable all extensions temporarily.
- Restart browser.
- Test attachment preview.
- If it works, re-enable extensions one by one to find the culprit.
D. Disable enhanced tracking / strict privacy.
- If you're using: Strict privacy mode. Third-party cookie blocking. Corporate security software.
- Temporarily relax those settings and test again.
E. Check Outlook attachment settings.
- In Outlook Web, Click gear Settings.
- Go to Mail.
- Open Attachments.
- Make sure preview options are enabled.
F. Try Outlook in incognito / private mode. This bypasses extensions and cached data. If it works there, the issue is definitely browser-related.
G. Check if it’s a work/school account policy. If this is a company or school account, your admin may have disabled attachment previews for security reasons. You can test by:
Logging in from another device.
Logging in from a different network (home vs office).
G. If nothing works, reset browser.
I hope this helps.
Regards,
Jhun