Thanks for activating/deactivating Hikvision software license by offline mode.
Hikvision license management system has been upgraded overall. The newly released software versions including HikCentral Enterprise v1.1 and above, HikCentral Pro v1.5.1 and above, HikCentral Master, pStor v1.4.1 and above, iVMS-5200 Mobile v1.1.4 support new license management inherently and please use this link: https://kms.hikvision.com/#/active for offline activation/deactivation.
For old version software, including HikCentral Enterprise v1.0, HikCentral Pro v1.5.0 and below, pStor v1.4.0 and below, iVMS-5200 Enterprise, iVMS-5200 Professional, iVMS-5200 Mobile v1.1.3 and below, iVMS-8600, HikCentral Cloud.
The license can Not be offline activated/deactivated through the above link, Please contact technical support to get license patch first.