Tumblr
Tumblr Blocking Access to Firefox Users with 403 Error
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Personal experienceImported from BlueskyPublished Oct 14, 2026
Impact: I have to change my user agent to access - which not everyone is technical enough to do, or even know to try.
From the original report
“your site is currently rejecting Firefox with a 403 error? I have to change my user agent to access”
Read original Bluesky ↗
Details & sources
- How received
- Imported from Bluesky
- Source published
- Oct 14, 2026
- Observed
- Unknown
- Added to CleanApp
- Oct 14, 2026
- Product connection
- Affected product or place
- Original issue status
- Unknown
- Resolution
- Unknown
- Verification
- Not independently reproduced
Source count unknown
Why this source type: The author personally experiences a 403 error when trying to access Tumblr using Firefox and has to change their user agent to get access.
CleanApp AI summary
Tumblr Blocking Access to Firefox Users with 403 Error: Tumblr is reportedly returning HTTP 403 Forbidden errors to visitors browsing with Firefox unless their user-agent header is modified.
Report counts are not affected-user counts. A closed original issue does not confirm a fix.
Public ID: rpt_4AuPXMnn3elrIvFcYqOaIA