Reseller News Join Reseller News Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.Sign up now Microsoft previews perpetual licence Office LTSC to enterprises Microsoft has released to corporate customers a preview of its next pay-once, perpetual licence version of Office: the tongue-twistingly named Office LTSC Professional Plus 2021. Credit: Dreamstime Microsoft has released to corporate customers a preview of the next pay-once, perpetual licence version of its Office suite. The application bundle — by far the productivity standard in business — came with a mouth-twisting name change: Office LTSC Professional Plus 2021. As it did in February when it revealed some information about the successor to Office 2019, Microsoft again argued that the new suite is a limited-use option for enterprises.