You have two options to have the Middle Eastern (ME) version, the first option is to remove the existing non-ME version and then install the ME version.
The other option is to have multiple copies of Illustrator installed on your machine, one of which is the ME version.

- From the Adobe Creative Cloud Desktop menu, click on All Apps to view a list of installed Adobe applications
- Click the three ellipses shown beside each installed application
- Choose Uninstall to remove the non-Arabic application and remove Preferences when prompted
- Once ALL existing applications have been uninstalled/removed successfully, click on the “Account” icon found on the top-right corner of the Creative Cloud desktop application and choose “Preferences”
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5. In the newly opened Preferences dialogue window, click on “Apps” on the left pane
6. Scroll down to the bottom of the window, from the “Default install Language” drop menu choose "English يدعم العربية" in order to have Arabic support in Adobe applications, then click the “Done” button.
Now you may proceed to install the ME applications.
Note. Only Photoshop, Illustrator and InDesign are considered ME applications, while other Adobe applications will still have limited or no Arabic support.