...
You are using Outlook Click2Run, which is missing some necessary configuration. It's also possible that the configuration was damaged by another Outlook addin (e.g. Salesforce for Outlook).
Solution
You will need to fix your Outlook configuration. To do this, please download the correct file in the table below. The values you need to determine the correct cell are shown in the yasoon error message. If you are not using Outlook 2013, please contact us before continuing.
...
...