Released in October 2021, Office 2021 is the perpetual-license generation that came before Office 2024. With an Office 2021 key<\/strong>, you buy the suite once, install it on your PC and keep it with no time limit: no monthly payment, no yearly renewal, no feature switched off the day you stop paying. The apps run locally on your computer and work offline once activated.<\/p>\n Depending on the edition, an Office 2021 license installs the full desktop versions of these apps:<\/p>\n Office 2021 also supports the OpenDocument 1.3 format. In return, it does not receive the features added month after month to the subscription versions: what is installed on day one is the final scope of the suite. That is precisely what makes a fixed, one-time price possible.<\/p>\n All editions share the same engine and the same file formats. The difference lies in the apps included and in the number of computers covered.<\/p>\n For a single PC, Office 2021 Pro Plus offers the complete suite at a modest price. The 5-PC version equips a household or a small team in one order, with one invoice. And if you are setting up a new computer, the Windows 11 Pro + Office 2021 Pro Plus bundle covers the operating system and the office suite in a single purchase. Multi-PC options, when available, are shown on each product page.<\/p>\n An honest point first: Microsoft ended support for Office 2021 on 13 October 2026<\/strong>. The suite keeps working normally and without restriction, since a perpetual license does not expire; it still installs and activates, but it no longer receives security updates.<\/p>\n For a secondary computer, a family PC used for simple documents or an offline machine, Office 2021 remains a rational choice at a low price, and it is the last perpetual release that includes Publisher. If you handle sensitive data, open many attachments from outside or want a longer horizon, choose Office 2024<\/a>, supported until October 2029. Our Office 2021 vs Office 2024 comparison<\/a> details the differences, and if you are hesitating with the previous generation, read Office 2021 vs Office 2019<\/a>.<\/p>\n Because these are neither generic keys nor codes diverted from other programs, but genuine second-hand licenses<\/strong>. When a company closes, merges or moves its computers to a newer version, its Office 2021 licenses remain valid but unused. They are bought back, checked and put back into circulation.<\/p>\n The Court of Justice of the European Union validated this practice in the UsedSoft judgment (case C-128\/11): once software has been sold in the European Economic Area, the publisher’s distribution right is exhausted and it can no longer oppose the resale of the license, including for a downloaded copy, provided the first owner makes its own copy unusable. You therefore receive a key that activates on Microsoft’s official servers, with a VAT invoice.<\/p>\n Office 2021 installs on Windows 10 and Windows 11<\/strong>, preferably in 64-bit. Plan for about 4 GB of disk space, 4 GB of RAM and an internet connection for the first activation. Uninstall any previous version of Office first to avoid conflicts, download the suite from the official link in our email, then enter your 25-character key when prompted.<\/p>\n Delivery and support<\/p>\n Your key arrives by email, usually within minutes and within 48 working hours at most. A defective key is replaced for life, and our team answers by email 7 days a week, with a reply within 2 hours on average, from the first installation onwards.<\/p>\n<\/div>\n\n
Which Office 2021 edition should you choose?<\/h2>\n
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\n \nProduct<\/th>\n Apps included<\/th>\n Computers<\/th>\n Ideal for<\/th>\n Price<\/th>\n<\/tr>\n<\/thead>\n \n Office 2021 Pro Plus<\/a><\/td>\n Word, Excel, PowerPoint, Outlook, OneNote, Access, Publisher<\/td>\n 1 Windows PC<\/td>\n Home, freelancers, associations<\/td>\n {prix:microsoft-office-2021-pro-plus}<\/td>\n<\/tr>\n \n Office 2021 Professional<\/td>\n Word, Excel, PowerPoint, Outlook (full list on the product page)<\/td>\n 1 Windows PC<\/td>\n Professional use on one computer<\/td>\n {prix:microsoft-office-2021-professional}<\/td>\n<\/tr>\n \n Office 2021 Professional Plus (5 PC)<\/td>\n The same apps as Pro Plus<\/td>\n 1, 2 or 5 Windows PCs, depending on the option chosen<\/td>\n Households and small teams<\/td>\n From {prix:microsoft-office-2021-pro-plus-5-pc}<\/td>\n<\/tr>\n \n Windows 11 Pro + Office 2021 Pro Plus<\/a><\/td>\n Windows 11 Pro and the full Office 2021 Pro Plus suite<\/td>\n 1 PC<\/td>\n A new or freshly reinstalled computer<\/td>\n {prix:windows-11-pro-office-2021-pro-plus-bundle}<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Office 2021 support ended in October 2026: what it means for you<\/h2>\n
Why is Office 2021 so affordable here?<\/h2>\n
Compatibility, installation and activation<\/h2>\n