Moodle is a Learning Management System (LMS) written in PHP. In my previous article we discussed how to install Moodle on IIS server. Now we are going to learn how to upgrade a Moodle version from lower to higher.
Let us discuss the steps.
Step 1: Login to your Moodle site by using your admin user name and password. After Login go to Site Administration, then Maintenance Mode (in moodle 1.9 version) or upgraded versio which means Administration, Server, then Maintenance Mode.
![Enable Maintenance Mode]()
Figure 1: Enable Maintenance Mode
Once you have enabled the maintenance mode in the Moodle site only the Administrator can log in to the site. The other users like authenticated, course creators and etc..cannot access the Moodle site. At the login page of the site maintenance mode enabled message was shown.
![Maintenance enabled message at Login Page]()
Figure 2: Maintenance enabled message at Login Page
Step 2: In our second step select the drive like C: / D: where the Moodle folder is located; rename that lower version folder and then download the upgraded version in https://moodle.org/ download link. After downloading the newer version of Moodle copy and paste the folder where your older version folder is located.
Select the config.php file of renamed older version folder and copy that php file and paste this file into your new version folder.
Step 3: Now we run the Moodle by using your domain address or your local IP Address in your browser; run the following steps to be processed.
![Upgrading process]()
Figure 3: Upgrading process
In this window two options appeared - Continue and Cancel. We are going to hit the continue button; the upgrading process window will appear step by step.
![list]()
Figure 4
After checking the version extensions databasethe upgrading window will open in the following manner.
![Database Upgrading window]()
Figure 5: Database Upgrading window
It takes time to upgrade the database so be patient until the upgrading process is completed.
Step 4: After Database Upgrading a newer version upgrading process window will open.
![Newer version Upgrading window]()
Figure 6: Newer version Upgrading window
![Upgrading]()
Figure 7
After the mod files upgrading are completed the continue button will persist on the window. Then click the continue button.
The login page of new Moodle version page appears then enter your admin user name and password;hit login then go to site administration, maintenance mode, then click disable.