Hi Mike, I'm working on finding an answer to this. Thanks!
Ring_Remover.pdfRC has a powershell script (see attached - you'll need to convert from text to .ps1) that will remove all instances from a system - recall to reboot afterwards.
Note: it'll pop up a blank PS screen and the that will disappear if there are no errors.
Even though it's an older script, it's worked on all the versions so far (up to 2 weeks ago)
We do the MSI's for our remote servers, and the EXE for the workstations.
Hope this helps.
To ensure a clean slate, you can also download and run the "clean-up script" before installation. (see the bottom of the post for the URL)
However, you should consider installing the new updatable MSI instead of the EXE.
RingCentral has recently released an updatable MSI, and you can sign up to beta-test it. Using this build, you can use your MDM/EDM tools to push the RingCentral App to your users. The RingCentral App will automatically update itself without local admin permission.
Installing the updatable MSI requires admin permission, and it will install the deployment file at the system level. Once a user logs out and logs in to the computer, the RingCentral App will automatically install in the background into the user level.
This will replace an existing MSI installation, so there is no need to remove anything beforehand. However, if the existing is an EXE installation, then both versions will co-exist in the computer, and you can manually remove the EXE installation afterward.
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(Quote from https://support.ringcentral.com/article-v2/The-RingCentral-app-lifecycle-policy.html?brand=RingCentral&product=MVP&language=en_US&pills-nav=admin)
It’s highly recommended to run this clean-up script (download here) before installing the new build so the old versions of the RingCentral app are removed.
For admins who prefer to use the MSI build, we’re working on an updatable MSI build. Sign up here to receive an update when it becomes available.