Allow file preview while download is blocked

Products

• CASB Gateway Advanced
• CASB Advanced Threat Protection
• CASB Audit
• CASB Gateway
• CASB Security Advanced
• CASB Security Advanced IAAS
• CASB Security Premium
• CASB Security Premium IAAS
• CASB Security Standard
• CASB Securlet IAAS
• CASB Securlet SAAS
• CASB Securlet SAAS With DLP-CDS

Issue/Introduction

Creat a policy to block file downloads from OneDrive, the policy works successfully, but the file preview cannot be viewed in the browser.

Is it possible to allow viewing the file while blocking file download?

Resolution

This can be accomplished by creating an Access enforcement via Gatelets policy that has Download selected in Activities.

This will block downloads and allow you to preview files.

PDF files need to be downloaded to view in browser so they will not be allowed to be viewed.

There might be other files that are the same.