Current vs Expected Behavior: Currently, all deployment thumbnails show “Error: Forbidden (403)” in the Vercel dashboard preview starting from commit f6d7fc7 (“unused files cleaning”). Even older rollback deployments now show the same error. Expected behavior: the thumbnail should show a screenshot…

Hi everyone, our team has confirmed that a fix has been deployed for this issue. No actions are needed on your end. Let us know here with URLs and request IDs if you face it.

Hi, do you have any update re the problem?

Hello, I am also facing the same issue it’s a been a week like this, could you help me out, I do not use the Rules or have set any custom ones, the dashboard preview for my project is the only thing that seems to be broken.

Hi everyone, I understand that this has been less than ideal. I’ve escalated this issue with our team. In the mean time, if you’re using domain fronting on these projects, try turning it off because are actively restricting projects using this to ensure high security measures.

Update: Our team is actively working on a fix. If your project was created before 2026-01-01, redeploying it should unblock you in the meantime.

yes i am still seeing this issue!

I’m having the same issue. I deleted that project and started a new one, but it’s still the same. [Screenshot 2026-05-09 at 8.47.33 PM]

I’m having the same issue, it’s really hurting my trust in Vercel. These 403 issues started happening to me around a week ago, randomly everywhere.

My projects are getting X-Vercel-Mitigated: deny responses when loaded in an iframe from adfin.com . I need to whitelist iframe requests from my domain.

Are you guys all on the free tier or are you paying for Vercel? I’m a bit concerned because I want to switch to the paid version once my project are advertised to customers but if I risk to have my website unavailable for 1+ weeks I need to reconsider my risks and choices.

Deployment thumbnail shows "Error: Forbidden (403)" — live site works fine

Help

prowebcoder (Prowebcoder) May 9, 2026, 10:34am 52

I am having the same issue to my 5 projects.

Just checking if there was any solutions for this issue …

Topic		Replies	Views
Deployment thumbnail 403 - DDoS Mitigation blocking screenshot service Help	2	114	May 5, 2026
Vercel 403 error Issue on preview Help	9	133	May 14, 2026
403 Forbidden error ONLY on Dashboard Preview Thumbnail (Live site works fine) Help	1	73	May 11, 2026
Vercel preview Help	1	13	May 5, 2026
Issue with Vercel Dashboard Preview – 403 Forbidden Help	3	483	March 9, 2025

Deployment thumbnail shows "Error: Forbidden (403)" — live site works fine

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