Here is what I think you are saying:
The result in column C should be Yes if a Yes appears in column B for any of the occurrences of the same server name in column A.
The formula for column C should be
This is an array formula. After typing in the formula, do not hit ENTER--hit CTRL+SHIFT+ENTER. You have done it correctly if the formula in the formula box has {braces} around it. You cannot type in the braces; they are just an indicator that it is an array formula.
If this does not solve your problem please attach a sample file. An image has limited value. The paper clip icon does not work for attachments. To attach a file, under the text box where you type your reply click the Go Advanced button. On the next screen scroll down and click on Manage Attachments, which will show a pop-up window to Select and Upload a file. Then close the window.
Bookmarks