How to activate Microsoft Office 2021 Professional Plus + AVG Internet Security keys?

Redeeming Microsoft Office 2021 Professional Plus + AVG Internet Security keys is really simple, just follow these steps:

Microsoft Office 2021 Professional Plus

OPTION 1:

Uninstall your current Office set up
Reboot your computer
Install Office using the official offline installer, available at the official Microsoft.com download link: http://officecdn.microsoft.com/pr/492350F6-3A01-4F97-B9C0-C7C6DDF67D60/media/en-us/ProPlus2019Retail.img (Please copy the link and paste into your browser search bar)

NOTE: If you are having problems with slow download of the large size Office setup ISO file, then we suggest to use the following safe lightweight opensource freeware software in order to consistently speed up the download and avoid download timing out or failing due to slow internet speed or connection loss due to server issues:

https://www.freedownloadmanager.org/

After installing the software, simply copy/paste the download link on the download manager, and it will download the file for you until completion without further issues.

Download link for Microsoft Office Professional 2021 Plus 1 Retail:

https://officecdn.microsoft.com/pr/492350f6-3a01-4f97-b9c0-c7c6ddf67d60/media/en-us/ProPlus2021Retail.img

PRODUCT KEY ACTIVATION

1. Get Installation ID

Press Win + R, type SLUI 4, and press Enter
Select your country/region

Write down the Installation ID.

2. Open Microsoft Activation Portal

Go to https://aka.ms/aoh
Sign in with your Microsoft account

3. Generate Confirmation ID

Enter the Installation ID on the portal
Copy the Confirmation ID provided

4. Complete Activation

Return to the original PC
Enter the Confirmation ID to finish activation.

OPTION 2:

Reedeem the key at setup.office.com.

AVG Internet Security

Visit the Activation site on AVG to redeem the Sales Number and receive the AVG e-mail with the License Code to utilize on your PC
Go to the Download site to download AVG Internet Security.
Run as administrator the downloaded file by right-clicking on it.
In the User Account Control dialog, click Yes
Click Continue after setting the language.
Enter your License Number and click Install now.
Press the Scan now button to begin using the program.

The key is not working

If you have activated the key according to the guide but the code appears not to work, please check what type of error message you receive and depending on it follow the appropriate instructions: