This sounds like an issue that you should follow up with SAS Technical Support.
I suspect that it will require an uninstall of the SAS Add-in, and then a reinstall. During installation the SAS Add-In is registered with MS Office and with the OS on a couple of different levels. While it might be possible to fix it "in place" without re-installing, re-installing might be the quickest path to resolving this.
Chris
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