Opening a Work Plan in Microsoft Project from PPM

Using Internet Explorer and Microsoft Project 2007, opening a work plan in Microsoft Project from PPM generates a lock file for the Microsoft Project file. However, after closing the Microsoft Project file, the lock file is not reset. When opening the same work plan in Microsoft Project from PPM (without restarting Internet Explorer), the File in Use message is displayed and the Microsoft Project file can only be opened in read-only mode (you may also choose to be notified when the file is no longer in use).

After closing the Microsoft Project file that has been opened from PPM, reset the lock file by doing one of the following:

  • Delete the lock file

    From any Internet Explorer window, do the following:

    1. Select Tools > Internet Options.

    2. In the General tabbed area, in the Temporary Internet files section, click Delete Files.

    3. From the Delete Files dialog, click OK.

    4. From the Internet Options dialog, click OK.

  • Restart Internet Explorer

  • Restart the system on which Internet Explorer is running