Windows XP, Vista, 7, 8, and 10 (both 32-bit and 64-bit).
While the 2017 edition is an older version, you can typically find it through the following channels: PowerArchiver 2017 17.01.04 released! PowerArchiver 2017 Free Download
Includes add-ins for Outlook, Word, and Excel to compress and encrypt files directly within those applications. System Requirements Windows XP, Vista, 7, 8, and 10 (both 32-bit and 64-bit)
A fully portable 32-bit and 64-bit version was released, allowing use from a USB stick without local installation. PowerArchiver 2017 Free Download