Prompt 1: Some files can harm your computer.
If you receive the above message when opening a PDF file, the prompt can be suppressed by setting the setting below in the registry to 1
Prompt 2: Check Out & Open, Open, Cancel
This is displayed by Adobe Reader as part of its improved awareness of SharePoint. Various internet articles note that this prompt is displayed even if the user has read-only access. The above message cannot be suppressed.
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