I'm using the desktop OL 2010 on Win 8.1 and I have discovered that there are the Address Card and By Category views are duplicated (By Category has 3 of the same view). Because they are standard views (not sure if that's the correct term) there is no option to delete them, unlike Custom Views that I've created. How can I get rid of the duplicates?
This is an upgrade from OL 2007, but it's been 4-5 years. I don't recall this being a problem until recently. At various times, I've run Outlook for BCM, Dynamics CRM, & Maxhire addon's (in that order) but I can't connect any of them to this problem. Also, I recall seeing something about /cleanviews indicating that it removes your custom views permanently. I rely heavily on them (4-5 that I use daily).
Yes, cleanviews will wipe out custom views. If its not causing other issues, I'd try to ignore it. You might be able to remove the extras using mfcmapi, but if you mess up, it could corrupt you other views, requiring cleanviews.