I am joining a large excel spreadsheet to a feature class. Both have a little over 8,000 records. I have gotten this particular join to work before, unfortunately, I had to redo it. This time I cannot get it to join at all. Both of the data types for the table and the attribute table for the particular field the join is based on are the same type. I have tried remaking the spreadsheet. I have used a different mxds with copies of the feature class uncorrupted from this prior to the join not working. I have tried everything I can think of, checking for any reason it may not be working. I have now tried it multiple times and it simply won't do what it has already done before. Usually, I have no trouble at all with joins.
Does anyone have any insight why I am having this trouble?