Generally, Windows Defender SmartScreen will block you from opening some apps if they come from an unknown place or are created by an unknown publisher. It may detect Grass Valley installer as a file that come from an unknown place or are created by an unknown publisher.

Follow bellow steps to install our product.

1) Click [Don’t run] to close the dialog

2) Right-click on the installer file then choose [Properties]

3) Confirm if [Unblock] button exists, if yes click the button

4) Click [Apply] then [OK] button

5) Re-open the file properties then make sure if the option disappeared

6) Close file properties

7) Run the installer

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