OL97: Messaging Interface Has Returned an Unknown Error

• Microsoft Outlook 97

SYMPTOMS

When you check for new mail, send a fax, or create a new Calendar item in Microsoft Outlook 97, the attempt fails and you receive the message:

The messaging interface has returned an unknown error. If the problem persists, start Outlook again.

RESOLUTION

Finding a solution to this problem can be difficult. Follow these troubleshooting steps to resolve your problem.

• Use the Inbox Repair Tool



• Create a New Personal Folders File



• Create a New Profile



• Install a New Set of MAPI files



• Reinstall Windows

Use the Inbox Repair Tool

1. If Outlook is open, on the File menu, click Exit and Log Off.



2. Click the Start button, point to Settings, then click Control Panel.



3. Double-click Mail and Fax. (If you do not have the fax service installed, it will simply be Mail.)



4. On the Services tab, click Personal Folders and then click Properties. Make a note of the information in the Path field, then click OK.



5. Click Start, point to Programs, point to Accessories, point to System Tools, then click Inbox Repair Tool.



6. Type the path to your Personal Folders file from Step 4, then click Start. After the file is scanned, click OK.



7. Start Outlook and check for new mail, send a fax, or create a new Calendar item.

Create a New Personal Folders File

1. If Outlook is open, on the File menu, click Exit and Log Off.



2. Click the Start button, point to Settings, then click Control Panel.



3. Double-click Mail and Fax. (If you do not have the fax service installed, it will simply be Mail.)



4. On the Services tab, click Personal Folders and then click Properties. Make a note of the information in the Path field, then click OK.



5. On the Services tab, click Personal Folders, then click Remove.



6. Click Add, click Personal Folders from the list of available information services, then click OK.



7. In File name, type your first name. For example, if your name is Bob, type the word Bob, click Open, then click OK in the next two dialog boxes and exit the Control Panel.



8. Start Outlook and check for new mail, send a fax, or create a new Calendar item.

1. On the File menu, click Import and Export.



2. Under Choose an action to perform, click "Import from a personal folder file (.pst)," then click Next.



3. Under File to import, type the path to your Personal Folders file from Step 4 above, then click Next.



4. Make sure Personal Folders is selected as the folder to import from and the folder to import into, then click Finish.

Create a New Profile

1. On the File menu, click Exit and Log Off.



2. Click the Start button, point to Settings, then click Control Panel.



3. Double-click Mail and Fax. (If you do not have the fax service installed, it will simply be Mail.)



4. Click Show Profiles.



5. Click Add.



6. Click to select the services you actually use, click Next, then supply the requested information for each of the services when prompted by the Inbox Setup Wizard.



7. When prompted for the path to your personal folder file, click your mouse pointer before the "m" of mailbox.pst and type the word new, then click Next.
   
   NOTE: Make sure the path information is not selected before you type.



8. Complete the steps in the Inbox Setup Wizard.



9. On the General tab of Mail and Fax, under "When starting Microsoft Windows Messaging, use this profile," select the name of the profile you just created, then click Close.



10. Start Outlook and check for new mail, send a fax, or create a new Calendar item.

Install a New Set of MAPI Files

1. On the File menu, click Exit and Log Off.



2. Click the Start button, click Shut Down, click to select, "Restart the computer in MS-DOS mode," then click Yes.



3. After your computer restarts, at the Command prompt, type

   cd\windows\system

   then press ENTER.



4. Use the MS-DOS Rename command to change the current name of each of the following nine files:

   
        mapi.dll       mapi32.dll    mapisp32.exe    mapisrvr.exe    mapiu.dll
        mapiu32.dll    mapix.dll     mapix32.dll     mspst32.dll 

   For example:

   ren mapi.dll mapi.old

1. When you finish renaming all of the files above, type

   cd..

   and then press ENTER.



2. Type

   win

   and then press ENTER. This will start Windows and any programs in your Startup folder.



3. In Windows, close any programs, then click Start, point to Settings, and click Control Panel.



4. Double-click Add/Remove Programs.



5. Select Microsoft Office or Outlook in the list, click Add/Remove, insert the Office or Outlook CD into the drive, then click OK.



6. Click Reinstall in the Setup maintenance program. This will install new copies of the MAPI files.



7. When the Setup program finishes, restart Windows, start Outlook, and check for new mail, send a fax, or create a new Calendar item.

Additional query words: ol20

Keywords : kberrmsg kbdta
Version : WINDOWS:97
Platform : WINDOWS
Issue type : kbprb