You may receive this error message when loading a page in UMP or admin console:
"An add-on for this website failed to run"
This especially applies to Windows lab systems or domain member servers where the internet options security is increased.
1. Add the site to trusted sites. The URI does not need "https" selected.
2. Set the security level to Low for Trusted Sites
3. Restart Internet Explorer (close the window and try the UMP link again.)
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