How do I resolve Outlook Add-in Conflicts?
Any synchronization problems, including those where records
- Synchronized as blank items
- Synchronized incompletely
- Duplicate items
Add-ins are extensions to Outlook that may be loaded into Microsoft
Outlook when installing third party software. Sometimes add-ins
fail to interact in the expected manner. Often the solution is to
uncheck the Add-ins you are not using.
The Add-ins required by WinPST are:
- WinPST Outlook Extension
- WinPST Outlook Addi
The following Add-ins are known to cause problems with WinPST.
We recommend that you uncheck them.
- Exchange Extensions Property Pages Add-in
- Outlook Sync
Uncheck all non-essential add-ins
Outlook 2000, 2002/XP and 2003
Open Outlook and click on Tools >>
Click on the Other tab and then click on the
Advanced Options... button.
Click on Add-In Manager...
Uncheck all non-essential add-ins, leaving the WinPST
Outlook Extension checked if it is listed. Click
Click on the COM Add-Ins... button;
Uncheck all non-esential add-ins, leaving just the WinPST
Outlook Addin checked if it is listed. Click on
OK and then OK again. Note this
is normal behaviour in Outlook 2000, XP and 2003 if the add-in not
shown in the COM add-ins list.
Outlook 2007 and 2010
Open Outlook and select Tools >>
Trust Center from the menubar;
Select Add-ins from the left panel
At the bottom of the dialogue, set the Manage
dropdown box to COM Add-ins and click on the
We recommend that wherever possible you disable all Add-ins other
than the WinPST Outlook Addin and WinPST
Caveat: If the below message is displayed:
then please be sure that a user with Administrative
rights is logged in. If user account control is enabled
then please run Outlook as an Administrator to overcome this. This
is done most easily by navigating to the Outlook shortcut in the
Start menu, holding shift and then right-clicking
on the Outlook shortcut. Holding down the shift
key will force the Run as Administrator menu to be
displayed. Click on this item.
If unchecking non-essential Add-ins as mentioned above did not
resolve the issue, then we recommend that you disable all the
add-ins except the WinPST Outlook Addin and
WinPST Outlook Extensio add-ins and then re-enable
them again one at a time until the problem re-occurs. You can then
determine which add-in is causing the problem.