Home › Forums › SharewareOnSale Deals Discussion › SpiderOak One Secure Backup / May 1 2018 › Reply To: SpiderOak One Secure Backup / May 1 2018 May 3, 2018 at 2:56 am #10994428 Quote MarkGuest [@Mark] I figured out what was causing my problem – Heimdal Pro was blocking SpiderOak One. I unblocked it and was able to register.