Hi, newbie here
I am using Excel 2010 and have been experiencing troubles with a spreadsheet that a client sent to me. The option for conditional formatting is greyed out and I can't use it at all.. I've had similar problems when a spreadsheet has been shared with other users but that's not the case here. Even more confusing is that the client doesn't have this problem on their end!
Any thoughts? It's probably something simple I'm overlooking (or so I hope).
Thanks in advance.
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