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Windows Versions Supported:

• Microsoft Windows Vista, Windows XP, Windows 7, Windows 8, Windows 10 (32-bit or 64-bit).
• Supports Windows XP Home and Professional versions, including 32-bit and 64-bit.
• Supports Windows Vista Home, Business and Ultimate versions, including 32-bit and 64-bit
• Supports Windows 7 Home, Professional and Ultimate versions, including 32-bit and 64-bit
• Supports Windows 8 desktop versions, including 32-bit and 64-bit
• Supports Windows 10 desktop versions, including 32-bit and 64-bit

Not Supported:

• Portuguese Windows is not supported.
• EssentialFax will not install or run on some "server" operating systems. If in doubt - try before you buy.
• EssentialFax will not run in a virtual machine, such as VirtualPC, VirtualBox, VMWare or Parallels.
• Windows RT (aka Windows 8 tablet)

Hardware requirements:

• Hard disk with at least 30 MB available.
• Screen resolution of 800 x 600 or better.
• A standard dialup-type faxmodem, and standard telephone connection
• * Please read this if you using a non-standard telephone service, such as VOIP, as this can cause problems with faxing.
• * Please read this if you are using DSL or CABLE
• The faxmodem must be a local faxmodem, not a shared network faxmodem