Before Installing Office, First Enter your product key to redeem and download your office. Install & Reinstall your office latest or old version.
Step 1 : Visit www.office.com/setup and check how to sign in to your acocunt
Step 2 : check how to verify your product key and download your soft copy
Install Office on Windows and Mac Pc
After your product key redemption and download office, install office on windows or Mac Pc
Install Office on Windows
Step 1 : Depending on your browser, select Run (in Edge or Internet Explorer), Setup (in Chrome), or Save File (in Firefox).If you see the User Account Control prompt that says, Do you want to allow this app to make changes to your device? select Yes.
Step 2 : Your install is finished when you see the phrase, "You're all set! Office is installed now" and an animation plays to show you where to find Office applications on your computer. Select Close.
Step 3 : Follow on page instructions
Install Office on Mac
Step 1 : Once the download has completed, open Finder, go to Downloads, and double-click MS Office installer.pkg file (the name might vary slightly).
Step 2 : On the first installation screen, select Continue to begin the installation process.
Step 3 : Review the software license agreement, and then click Continue.Select Agree to agree to the terms of the software license agreement.
Step 4 : Choose how you want to install Office and click Continue.Review the disk space requirements or change your install location, and then click Install.
Step 5 : Enter your Mac login password, if prompted, and then click Install Software. (This is the password that you use to log in to your Mac.)
Step 6 : The software begins to install. Click Close when the installation is finished.
Step 1 : To Reinstall office fisrt, enter office product key and download old version
Step 2 : Follow same steps on installation