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 everyone, did anyone try this fix in the meantime? Let me check the status of the fix deployment.

Your proposed solution didn’t work. Please fix the problem with V0 iframes on adfin.com . We have already been waiting for a week for a resolution!

Anshuman We have a Series A announcement tomorrow, and if our website has widespread 403 issues with v0 iframes, it would be a very bad sign for our customers. We kindly ask you to prioritise this issue highly and resolve it today.

Hi Anshuman , unfortunately the proposed solution didn’t fix the issue. Further observation indicates that after every deployment the issue worsen and after some minutes it becomes better but not resolved. My main issue is that the forbidden errors are an predictable and I have no way to know how m…

What is the solution here, can you revert until you figure it. Our clients are complaining and we have nothing to do except move to other vendors.

Hello! Been getting them in all my projects too, its random and appears randomly across devices and browser types

I’m experiencing the same issue, reported it here Deployment thumbnail shows "Error: Forbidden (403)" — live site works fine

It seems to be fine now for me.

I just redeployed my project and now its working fine .Thank you so much for your help

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

Help

mtzat2022 (Mtzat2022) May 12, 2026, 3:25am 65

Same issue seen here. Please advise how to fix! This is impacting our upcoming product launch.

Topic		Replies	Views
Deployment thumbnail 403 - DDoS Mitigation blocking screenshot service Help	0	125	May 3, 2026
403 Forbidden error ONLY on Dashboard Preview Thumbnail (Live site works fine) Help	1	84	May 11, 2026
Vercel 403 error Issue on preview Help	9	165	May 14, 2026
Vercel preview Help	1	20	May 5, 2026
Issue with Vercel Dashboard Preview – 403 Forbidden Help	2	511	March 9, 2025

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

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