Why does this happen?
Microsoft has some security measures in place to prevent slow add-ins from running inside Outlook. However, in many cases, add-ins without fault are being mistakenly marked as slow and disabled by Outlook.
What can I do about it?
Please run through the following steps to fix this issue:
Be an Administrator
Make sure you run Outlook as an Administrator when you enable the add-in. To run the application as an administrator either:
Right-click the application and select “Run as Administrator”
Contact your IT administrator(s) to request to be given administrator privileges within the Outlook Application.
Force Outlook to always enable the add-in
By default, the Unipass Mailock Add-In installs with parameters that force Outlook to ‘Always enable this add-in’.
You can check this setting and, if required, re-enable it by following these steps:
On the File tab, click “Manage COM Add-ins”.
Locate the Beyond Encryption entry and click Always enable this add-in.
Changing the Load Behavior
If the Add-In setting above is correct and the Unipass Mailock Add-In is still not loading when Outlook is opened, then it may be due to the registry setting that controls how the Unipass Mailock Add-In is loaded. The following steps detail the process you should follow to correct this registry setting.
On the Outlook “File” tab click “Options” then click “Add-Ins”
Set the “Manage:” dropdown menu to “COM Add-Ins” at the bottom of the page.
Click the “Go…” button.
You will be able to see the current load behavior of the Unipass Mailock Add-In which should be set to "Load at Startup" like this:
If load behavior is set to any state other than ‘Load at Startup, follow these steps:
Close all Microsoft Office applications.
Open your Registry Editor. To do this, open your Windows Start menu and type "regedit".
Go to HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins\Beyond Encryption
Take a note of the LoadBehavior data value as shown below:
If the LoadBehavior key is anything other than "3" then follow these steps:
Change the LoadBehavior to "3." Close the registry editor.
Re-open the registry editor to ensure "3" is still there.
The Unipass Mailock Add-In should now load automatically when starting Outlook and the blue Unipass Mailock ‘Compose New Secure Email’ button should appear in the top left-hand corner of your Outlook ribbon.
If you would like further information on LoadBehavior and the values that it can be set to, the following MSDN article covers this: https://msdn.microsoft.com/en-us/library/bb386106.aspx#LoadBehavior