Installing an extension is a three-step process that should take place during off-peak hours. Before the extension is installed, your store is put into maintenance mode, checked for readiness, and backed up. After the extension is installed, it must be configured for your store according to the developer’s instructions.
Some extensions require different installation steps using Composer. These installations may require developer assistance. See the DevDocs Extensions Guide.
For complete information on installing components, modules, and extensions, see Magento User Guides by edition and version.
To install a Magento 2.x extension:
Log in to the Admin of your Magento store as a user with full administrator rights.
To ensure the fastest installation, verify that Cron is configured to run every minute.
On the Admin sidebar, click System. Then under Tools, choose Web Setup Wizard.
Web Setup Wizard
Click Extension Manager, then click Sign In.
When prompted, paste the Public Access Key and Private Access Key from your Marketplace account.
If you need your access keys, click the Magento Marketplace account page link, locate the keys from the Access keys page, and add them to the Admin page.
Click Submit .
Paste Access Keys
It will take a few minutes to generate the summary and list of all available updates, recently purchased extensions, and currently installed extensions and sample data.
Summary of extensions and information
Under Extensions Ready to Install, click Review and Install to see a list of all available extensions.
In the Latest version column, choose the version that you want to install. Then in the Action column, click Install.
Your store will be put in Maintenance Mode while the backup is created. By default, the backup includes the code, media, and the database. Clear the checkbox of any item that you do not want to include in the backup.
Click Create Backup. Then, wait a few minutes for the backup to complete. Locations and information are posted for each backup.
You can see the path to the backup file at the bottom of the report. Click Next.
Your store will be taken offline to protect shoppers during the installation. When you are ready to begin, Click Install.
Depending on your cron setting, it might take some time for the installation to complete. The page shows the current status, and you can track its progress in the Console Log. The Success page appears when the process is complete.
When complete, click Back to Setup Tool. Then, click System Configuration.
In the upper-right corner, click the Reset link to log out.