Edge-only screenshot blocking comes to OneDrive PDFs

Starting in August, Microsoft will block screenshots of certain PDFs opened from OneDrive and SharePoint — but only in Microsoft Edge.

The feature is limited to enterprise users. It applies when a document has a Purview Information Protection sensitivity label and does not include the Copy (EXTRACT) permission. When those conditions are met, screenshot blocking is turned on by default. Personal OneDrive accounts and unlabelled files are unaffected.

This fills a gap in Microsoft’s protection system. Purview labels already let companies restrict editing, printing, copying, and screenshotting in supported desktop apps, but PDFs opened in a browser did not consistently enforce the same rules. Microsoft also says admins can disable local downloads, which stops users from saving a protected file and reopening it outside Edge.

The company is pitching the change as a way to reduce leaks by users who are allowed to view a document but should not be able to easily capture or share it. The protection could matter for financial records, legal documents, and unreleased product materials.

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The catch is browser support. Chrome, Firefox, Safari, and mobile browsers will not enforce the restriction. Microsoft says users who open protected documents outside Edge “may receive inconsistent enforcement,” and recommends Conditional Access or browser-management policies to steer employees toward Edge.

That makes the update more than a security feature. It is also a clear attempt to give IT departments a reason to standardize on Microsoft’s browser. Microsoft has said support for additional browsers and mobile apps may come later, but it has not given a timeline.