To activate MS Office, you need to enter the product key or sign in with a Microsoft account (if the license is linked to an online account). In the corporate network, it is possible to activate MS Office on the on-premise KMS server (for more details, see the article “KMS activation of Office 2019/2016”. Using a command-line switch doesn't mean you have to type the whole startup command at the command prompt. You can start the Office app as usual, by clicking the program icon on the desktop, or by clicking the program name on the Start menu. All startup methods essentially do the same thing: they run the app's .exe file, even if you don't Resetting Office activation Open Command Prompt and navigate to the following folder C:\Program Files (x86)\Microsoft Office\Office15 C:\Program Files\Microsoft Office\Office15 Run cscript ospp.vbs /dstatus Observe the results and uninstall each product key cscript ospp.vbs /unpkey: In any Office app, select the File menu and then select Account near the bottom of the menu. Under Product Information, select the Change License button. If there is no Change License button, you may need to install Office updates. Do one of the following: If you're signed in, select Use a different account, and then select Enter product key Press Windows key on the keyboard and type cmd. Right-click on cmd from the programs list and select Run as administrator. Type the following command: slmgr -upk. slmgr -ipk . slmgr -ato. 4. Exit the command prompt. Note: slmgr -upk uninstalls the Product Key, slmgr -ipk installs the Product key and slmgr Open a command prompt. For instance via: Start-> type: cmd In the command prompt, type the following: Office 2016/2019/2021 (32-bit) on a 32-bit version of Windows cscript "C:\Program Files\Microsoft Office\Office16\OSPP.VBS" /dstatus Office 2016/2019/2021 (32-bit) on a 64-bit version of Windows Get started with the Office Deployment Tool. The ODT consists of two files: setup.exe and configuration.xml. To work with the tool, you edit the configuration file to define what options you want, and then run setup.exe from the command line. Here’s a 3-step guide to help you find it in your email or Microsoft account! Step 1: Check your Email. If you got a digital copy, look for emails with “Product Key” or “Activation” in the subject line. Check the body or attached document to find the key. Step 2: Check your Online Account. To resolve this issue, follow these steps on the computer(s) in question, replace the KMS product key and convert it to a KMS or MAK client: Open an elevated command prompt. Run cscript slmgr.vbs /ipk xxxxx-xxxxx-xxxxx-xxxxx-xxxxx, where xxxxx-xxxxx-xxxxx-xxxxx-xxxxx is Windows product key (there should be 25 numbers). How to remove Office 2019/16 product key on Windows. 1. Open a PowerShell (or command prompt) as Administrator. 2. In the PowerShell (or command prompt), type the following: 3. You should now get a screen with some license details such as the license name, type and the last 5 characters of the Product Key. 4. aC1f.