A major complaint surrounding Outlook and add-ins is that it disables an add-in you need because it thinks the COM add-in loads too slow.
I’ve had it disable all of the Microsoft add-ins, including the Exchange add-in and the Social Connector. Outlook also disabled Business Contact Manager. Yes, BCM loads slow, but it also adds features I'm willing to wait for.
Fortunately, there is a solution: set a registry value to force Outlook to always load the add-ins. It will disable an add-in that it believes causes Outlook to crash, but won’t disable add-ins because they load too slow.
Administrators can control this using the GPO; anyone can add this key and value to the registry.
Browse to the following key, add a string value using the addin name and set it to 1.
Outlook 2016 and newer
HKEY_CURRENT_USER\Software\Policies\Microsoft\office\16.0\outlook\resiliency\addinlist RG_SZ= add-in name Value = 1
HKEY_CURRENT_USER\Software\Policies\Microsoft\office\15.0\outlook\resiliency\addinlist RG_SZ= add-in name Value = 1
Examples of the add-in names are:
|Addin Name in Registry
|Valid values are
|The add-in is always disabled (blocked)
|The add-in is always enabled
|The add-in is configurable by the user and not blocked by the "Block all unmanaged add-ins" policy
Do It For Me
How to Find the Addin Name
You can get the add-in name to use from any of the following registry keys. Right click on the key or Value name, choose Rename then select the name and copy (Ctrl+C). Exit the dialog without changing the name.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\nn.0\Outlook\Addins (nn = your version of Outlook)