![\"outlook_positive_duration\"](\"http:\/\/it.thelibrarie.com\/weblog\/wp-content\/uploads\/2009\/10\/outlook_positive_duration.png\" "\\"outlook_positive_duration\\"")
<\/p>\nI had a user who complained that he could not delete an item from his calendar on outlook 2007. He was actually trying to open the item on the calendar, but it provided the same results:<\/p>\n
<\/p>\n
Cannot open this item. You must enter a positive duration.<\/p>\n
What the hell does that mean? Basically the user somehow created a task that repeated from today through to the end of the world (infinity). Somehow it wouldn’t move, delete, open, or rename.<\/p>\n
Being the network administrator that I am, I took ownership of his mailbox – well technically “Publishing Editor”, but we’ll assume ownership. <\/p>\n
OK, I’m going to assume that you have already given yourself permissions to read the user’s mail\/calendar by checking the Full Mailbox Access allow box in Active Directory AND have added the mailbox account to your outlook.<\/p>\n
Click on Calendars
\nCheck the box next to the Calendar in Mailbox – USERNAMEHERE
\nRight-click on the Calendar in Mailbox – USERNAMEHERE that shows up on the main screen and select properties
\n![\"calendar_properties\"](\"http:\/\/it.thelibrarie.com\/weblog\/wp-content\/uploads\/2009\/10\/calendar_properties.png\" "\\"calendar_properties\\"")
\nNow click on the Permissions tab
\nAdd your username to the list
\nGive your username Publishing Editor privileges<\/p>\n
Now you can left-click once on the task and hit the magic Delete button. You may or may not still get an error about not being able to save the task, but it will surely go away.<\/p>\n","protected":false},"excerpt":{"rendered":"
I had a user who complained that he could not delete an item from his calendar on outlook 2007. He was actually trying to open the item on the calendar, but it provided the same results: Cannot open this item. You must enter a positive duration. What the hell does that mean? Basically the user … Continue reading You must enter a positive duration<\/span>