Outlook stores file attachements in a 'secure' location on your hard drive. It appears as if there is a functional limit to the amount of data (no one know for sure) you can store before Outlook fires off this message. There are two ways to approach:
**Warning - you'll be accessing and/or editing the registry - be cautious!**1. Find out where this [Outlook temp] folder is and delete everything in it
- Click Start, click Run, type regedit, and then click OK.
- Locate and then click the following registry key:
- HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Security\
- Depending on your version of Office the number after the word "Office" above may be 9.0, 10.0, 11.0, 12.0, etc. Typically the higher number is the current version.
- In the right pane, find OutlookSecureTempFolder.
- In the Value Data field you should see the location Outlook stores files
- Browse to this folder and remove everything
- Close and reopen Outlook and try again
2. Create a new folder for Outllook to store files:
- Click My Computer, and then double-click drive C.
- On the File menu, click New, and then click Folder.
- Name the folder OLTEMP (or whatever you want to call it).
- Click Start, click Run, type regedit, and then click OK.
- Locate and then click the following registry key:
- HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Security\
- Depending on your version of Office the number after the word "Office" above may be 9.0, 10.0, 11.0, 12.0, etc. Typically the higher number is the current version.
- In the right pane, double-click OutlookSecureTempFolder.
- In the Value Data field, type C:\OLTEMP\ and then click OK (or whatever name you called the folder)
- Exit Registry Editor.
- Restart the computer.
