When using the 'send as email' feature in Word, QuickBooks, or any third party software a error message pops up that reads "The file C:\users\username\appdata\local\microsoft\outlook\username.ost is in use and cannot be accessed. Close any application that is using this file, and then try again. You might need to restart your computer."
This computer was set up at the same time as 10 other windows 7 computers. Outlook uses hosted exchange settings and a backup PST was imported and then uploaded to the exchange site. Mail sends and receives normally. All other machines are working with similar setups.
I have repaired. I have created a new outlook profile with a new data file (in the same location.) I have done my best to verify the permissions are the same as other users.