Run Command Prompt as admin
Enter the following commands
cd C:\Program Files (x86)\Common Files\Outlook Security Manager
regsvr32 secman.dll

regsvr32 secman64.dll

Once you're finished you can close CMD Prompt and relaunch Encompass
Run Command Prompt as admin
Enter the following commands
cd C:\Program Files (x86)\Common Files\Outlook Security Manager
regsvr32 secman.dll
regsvr32 secman64.dll
Once you're finished you can close CMD Prompt and relaunch Encompass