After upgrading from Windows 7 to 10, my Outlook mail only worked properly for a couple of days. My Folders file started to accumulate unwanted items called 'Notes' - the first line is followed by _0 and the next line would be the same but with two 0's and when it got to four 0's it repeats itself 20 or 30 times. I get messages in my inbox from Microsoft Outlook telling me 'One or more folders in your mailbox is named incorrectly' and that I should rename them. When I do, it just duplicates the number of items in the Folders file with the new folder name plus the old ones identified as 'Notes'. So the problem is doubled. It won't let me delete them. I can go through the delete process but they just reappear. I get these inbox messages from Microsoft multiple times (as many as 60 at a time) with he same day and time stamp. Can anyone tell me how to get rid of this stuff for good? I have no idea why this is happening but it is incredibly annoying.