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New Voice
Oct 21, 2025 1:53 PM UTC
Solved

DocuSign Sandbox: Envelopes Created Successfully, but iframe Was Blocked

Hi Team,

 

Today we found docusign iframe was not loaded, it even worked yesterday, no changes applied in our side.

When I opened the signing URL  in the browser, which starts with “https://demo.docusign.net/signing/mtredeem/v1”.

I cannot find our domain in “content-security-policy” response header, and confirm our domain has been added into the FrameAncestors whie calling CreateRecipientView API.

 

Is their any update for demo site?

 

Thanks,

Fei

New Voice
Oct 22, 2025 8:48 AM UTC

I have figured out the root cause, it is our IT support added Content-Security-Policy in nginx globally. 😂

1 reply

fei.ouyangNew VoiceAuthorAnswer
New Voice
Oct 22, 2025 8:48 AM UTC

I have figured out the root cause, it is our IT support added Content-Security-Policy in nginx globally. 😂

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