Frequently Asked Questions
Frequently Asked Questions
M-Files Outlook add-in gets disabled / fails to load due to over 1000ms load time
Posted by Andrzej Cholewa (M-Files) on 28 August 2018 05:09 PM

Since Office 2013/2016 and up, Outlook add-ins with load time over 1000ms tend to be automatically disabled.

Microsoft explains that this has been implemented to speed up the performance of Outlook / Office products. 

The problem has been reported by many customers regarding M-Files Outlook add-in and that even re-enabling it in the settings does not solve the issue permanently (M-Files Outlook add-in has a load time of average 1.2s and it will still get disabled, sooner or later)

Solution / Workaround

To work around the resiliency logic, one can use a simple .reg file and add the add-in to the trusted add-ins list or a Group Policy Object to deploy the same values that would be generated locally to all the users in the domain:
1. Add a dword entry called ADDIN_NAME [MFOfficeAddin] with a value data of 1 under HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Office\1x.0\Outlook\Resiliency\AddinList
2. Set the LoadBehavior (US English spelling!) dword value to 3 under HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\Outlook\Addins\ADDIN_NAME [MFOfficeAddin]
3. Add a dword entry called ADDIN_NAME [MFOfficeAddin] with a value of 1 under HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\1x.0\Outlook\Resiliency\DoNotDisableAddinList

*ADDIN_NAME is the name of the M_Files Addin (MFOfficeAddin) as found under HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\Outlook\Addins\
*1x.0 is the office version, for example, 15.0 for Office 2013 and 16.0 for Office 2016

More on the Outlook resiliency logic and deploying the setting via GPO is available here:



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