How to fix Photoshop "DynamicLink Media Server is not available" error (ESET)

Error message shown while trying to open an .MOV video inside Adobe Photoshop: "Could not complete your request because the DynamicLink Media Server is not available." Solution: If there is a firewall on your PC than make sure it's not blocking Photoshop. Photoshop does NOT need an internet connection to open .MOV files! In this case there was probably an incompatibility between ESET's firewall and Photoshop.