Re-Enabling Outlook 2016 Add-ins

Add-ins in Outlook help the end user to connect to different applications of Interest. Those applications might be a plugin for a CRM tool or anything that would help in Improving the productivity of an end user.

There may be times when Outlook has too many add-ins which consequently might cause it to crash or run slowly. The email client has an inbuilt mechanism to disable add-ins that are possibly causing the crash. This would be the done automatically without the permission or approval from the user.

The next time you would open Outlook, you might find that some of the add-ins that you see everyday are apparently missing! Now there is no reason to panic, fortunately there is an easy way to bring them back to life and I will show you how!


  1. Click on the File Menu located in the top left hand corner. Screenshot (1).png
  2. Click on the Info tab on the left and scroll down.

Screenshot (3)

3. Scroll down and click on Slow and Disabled COM Add-ins. Screenshot (2).png

4. Click on the Add-in that you want to enable. Screenshot (4).png


And now you have brought your add-in back to life 🙂 !




Deleting Outlook Add-ins

Outlook as we all know is a popular email client. It gives you the functionality of connecting to different applications. In order to do that one would need to Install an add-in for that application.

Over a period of time if you go on adding add-ins, Outlook would reach a point where it would become terribly slow and prone to constant crashes. This is a time when you need to start thinking about deleting add-ins that you don’t need.

Fortunately deleting Add-ins in Outlook is very easy. It is similar to uninstalling an application in Windows. Most of the outlook add-ins would be located in the Programs and Features section of the control panel. All you would have to do is go to the Programs and Features section and uninstall the add-in.


  1. To open Programs and Features, there is a shortcut. Press the Windows Key and X, this would then open up a menu that would appear to be something like this Screenshot (257)
  2. Click on Programs and Features.
  3. This would then take you to the Programs and Features section of the control panel, where you can uninstall that add-in. Screenshot (258).png

Removing an Entry from the Outlook Autocomplete list

If we have to create a new personal email ID, the first thing which we have to do is create a unique username Nowadays, it is actually not possible to get the email ID we want because of the high number of users using services like Gmail. It’s very likely you would have people with the same first name and last name, so once you try to create an Email ID with that, it would say that it is not available.

For Companies, this is not the case. The company has it’s own email domain and it has the freedom to create the username of an email ID in whichever way it wants. Companies normally follow a naming policy in creating new email accounts for employees. For Example you might have a policy which says to use the first letter of the First Name and the last letter of the Last Name. Suppose we have a new employee whose name is Jacob Peterson. Following this policy his email ID would be . Let’s say he leaves the company after 3 or 4 months and later we have a new employee whose name is Jim Phillips. So, following the policy the Exchange admin would create the email ID as Now, this is not a problem since Jacob has left the organization and there would be no conflict.

Outlook has unfortunately a good memory and it will not forget people easily! Even though the person has left the company, Outlook would still keep him in his list. Outlook has a feature called AutoComplete. This gives an End user the ability to add an email address in the address field just by typing a couple of letters. The autocomplete feature maps the name with the email ID. So if you had an employee say Robert Stevens, you could type certain letters like R, O, B and it would show up in the auto complete list. Once you select the name, Instead of showing, it would show Robert Stevens.

Now because of this mapping, Outlook would be confused whether to stick with the original mapping – Jacob Peterson or establish a new mapping Jim Phillips. And when we try to send an email with the address, it might not get delivered since it uses the old mapping. We might get a message which would appear to be something like this

Your message to couldn’t be delivered.

Your email program is using outdated address information for


Office 365


Action Required


Outdated To address

So, in order to resolve this we need to remove Jacob Peterson from the Auto Complete List.  In order to do that one would have to follow these steps-

Steps to remove an entry from an Auto Complete List

  1. Open a New Email Message
  2. On the To Field, Type James
  3. Scroll down to the entry “Jim Phillips” and hit the Delete button.


Now, we have essentially removed the person from the memory of Outlook and Outlook would then map with Jim Phillips.

Please note that in normal scenarios, Outlook should be able to resolve this normally. But as you all know Outlook is prone to Issues, so sometimes it doesn’t do it automatically.

Issues with Outlook

Outlook is probably one of the most sought after and popular email client out there but like everyone else it has got it’s own fair share of problems. Since it’s launch with MS DOS the problems which the end users face are still prevalent even with the latest version which is Outlook 2016.

outlook_mail_logoThe Interesting part of the whole story is that Issues are not localized to one specific part of the system but rather span across the width. It ranges from Password Prompt to Outlook crashes. And a solution that may solve an Issue for one user might not be the fix for another user with the same problem! Outlook is strange in that way to say the least. But even with it’s shortcomings and Issues, it is still one of the email clients with the highest user base.

Having Outlook in an Organization has always put the IT Department on it’s toes. Since, there would be always be a support request from an end user every other day. Outlook is definitely an application that requires attention. It is not a “once Install and then forget about it ” kind of situation because there is always a high probability of an Issue occurring.

In a series of blogs I will be posting different Outlook Issues that I have encountered and how it was fixed. And please note that the solution which appears in this blog may not be a fix for yours even if it is the same Issue.

Outlook-Fix-Profile doesn’t load

Sometimes you might find that Outlook doesn’t load, it freezes at this screen.screenshot-104

In order to fix this Issue one would need to create a new profile. In order to do that follow these steps-

  1. Open the Control Panel, In Windows 10, do Win+X and click on Control Panel.
  2. Click on User Accounts.screenshot-105
  3. Click on Mail.Screenshot (106).png
  4. Click on Show Profiles.Screenshot (107).png
  5. Select Prompt for a Profile to be used. screenshot-108
  6. Then Re-Launch Outlook, it would ask you to choose a profile. Click on New.
  7. Create a name for the profile. Now Outlook will create settings for the new profile.
  8. Outlook would now be launched.
  9. Remember to Set this Profile, as the one to be used under Control Panel.