Hello, In SharePoint 2007, we have a calendar containing a large number of items. Suddenly we noticed that from June 19, 2011 to June 30, 2011, the items in the list do not display on the calendar view. All items in May, 2011 display correctly, as do all items in July, 2011. There is no filter on the view prohibiting these date ranges, and I verified that there are indeed items within that date range. Currently the size of the list is 12,774 items. Can someone please explain why this might be happening? Thanks! Aaron Jarboe Business Systems Analyst III Microsoft Global Security

Hi Aaron Jarboe, It’s hard to determine the exact cause of this issue from your description. So I can only speculate about the reasons first. I had encountered such problems, largely due to SharePoint Calendar doesn’t synchronize with Outlook Calendar after the user added an new item to Outlook Calendar. You can check whether it is for this reason. If it is so, the problem may lie on corrupt entries. If you go to your SharePoint Site and view the calendar you are having trouble with. Export using access and arrange by name, you will probably find some blank entries, if you delete these then close access all should be fine. You can also try to remove the calendar and re-add it using the Account Settings in Outlook: 1. Tools -> Account Options -> SharePoint Lists 2. Select the SharePoint calendar and click remove 3. Then go to the calendar site and connect to Outlook Thanks & Regards, Peng Lei

Thanks for the response Peng. Let me try to address some of these suggestions. I opened the list in datasheet view and saw no blank entires: every item is fully filled out. I was also able to export to spreadsheet and view the entires in Excel. I sorted them all sorts of ways and I still don't see blank entries. I connected the calendar to my personal Outlook, and after syncing all of the items in question are being pulled in. So it appears that the issue is limited only to the Calendar view within the SharePoint site. The list view of the calendar shows everything, The Outlook view shows everything, The Excel view shows only 5% of the items, The calendar view is misrepresenting only a 2 week period, but everything else displays correctly. Thank you for your assistance thus far. On that note - I've tried to create another calendar view to only display items in June, but it seems that I cannot filter on Start Time, but I can sort on Start Time. Do you know if this is by design? Aaron Jarboe Business Systems Analyst III Microsoft Global Security

Here's an interesting update. I view the calendar in calendar view, with Month as the default view. When I am viewing June, indeed I cannot see the items for June 19 through June 30. However, when I move to July, the calendar shows the days in June before July 1 (since July 1 falls on a Friday). When I'm viewing July, all the June items for June 26 - June 30 appear. So what is the problem with just the June calendar view? Aaron Jarboe Business Systems Analyst III Microsoft Global Security