Why did OneDrive File convert (preview) stop working in Power Automate?

John Wellmeier 6 Reputation points

My flow was working fine yesterday and even this morning, then it just... stopped. It's giving me this error message:

Conversion of this file to PDF is not supported. (Sandbox_HtmlTransform_InvalidOperation / An exception occurred while executing within the Sandbox)

Is there some sort of limit on how many you can convert? Nothing has changed in the flow that I am aware of.

OneDrive Management
OneDrive Management
OneDrive: A Microsoft file hosting and synchronization service.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Emily Hua-MSFT 26,921 Reputation points Microsoft Vendor

    Hi @John Wellmeier

    Welcome to Q&A forum ~

    But according to your decription, this issue is more related to flow, please check whether the known issues and limitations is helpful.
    Such as the maximum archive size for Extract archive to folder action is 50 MB and 100 files inside.

    To help you better, it's recommended to post a new thread on Microsoft Power Automate community. Thanks for your understandings.

    Besides, I find 2 similar threads, you can have a look.
    Convert to PDF Not Working
    400 Error Conversion to PDF not supported

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