Gold Star Family Support and Installation Access Act of 2017 This bill directs the appropriate military department to issue a standardized Gold Star Installation Access Card to the widow and dependent children of a deceased member of the Armed Forces to allow them to gain unescorted access to military installations to attend memorial events, visit gravesites, and obtain on-installation services and benefits. The Department of Defense shall prescribe regulations to provide that a surviving spouse of a deceased member, regardless of martial status, who has guardianship of dependent children of the deceased member, is entitled to use commissary stores and MWR retail facilities to the same extent and on the same basis as the unremarried spouse of a member of the uniformed services.