We have been having a problem since 9/12 with Citibank QB bank feeds. I tried to delete the feed and resetup but keep getting OLSU-1011 everytime I try to connect. Citibank is useless. It took me 5 attempts to get an idiot who even would discuss quickbooks but kept mentioning Quicken. This went on endlessly with me correcting him about there being a difference between Quicken and Quickbooks. 

It would be helpful for someone to post the fixes here.