How to fix Outlook Contacts Templates error: "To help prevent malicious code from running, one or more objects in this form were not loaded.":

Question

How to fix Outlook Contacts Templates error: "To help prevent malicious code from running, one or more objects in this form were not loaded.":

BForensicExpertPro 0

After starting with Windows 11, in Outlook I tried to open a contacts form I had created and received this error message pop up ""To help prevent malicious code from running, one or more objects in this form were not loaded." Please read the history below--a Microsoft moderator response would be great!

What happened:

Closing the error pop up box allowed me to open the template; fields were missing and rearranged--and that was backfilled for over 400 prior contacts using the form.
Four hours of support, screenshares, a thousand attempts to fix that did not work, and 4 calls later, they emailed me (a paying 365 user) that they couldn't help.
Online I found a "solution" which worked but I'm worried it has created a security issue.

What worked maybe" The answer I found in a microsoft forum (https://learn.microsoft.com/en-us/answers/questions/4734715/classic-outlook-windows-registry-issue?forum=outlook_com-all&referrer=answers) was to go into the registry editor and change the "disable ActiveX' from 1 to 0. The line item was

Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\Common\Security then select "disable allactiveX and set to 0 (the default was 1).

I did so and voila, everything is as it should be. No more error code, the template is restored, etc.

But is that solution actually a problem? Since 365 Support has ghosted me, I am left with this Google search resulting fix.

BForensicExpertPro 0 Reputation points

2025-07-23T18:13:30.26+00:00

Correction. I did not have a link to the solution. This is not where I got it, but it says the same thing

https://www.techrepublic.com/article/microsoft-office-activex-disable-default/#:~:text=In%20an%20Office%20app%2C%20navigate,ActiveX%E2%80%9D%20to%20%E2%80%9Co.%E2%80%9D
DebR 20 Reputation points

2025-08-06T10:02:51.3033333+00:00

Hi Jeronimo, I have a similar problem as I have setup a New computer with Professional plus 2024 and has Classic Outlook.

When setting up ICloud to sync, and having to tick the iCloud Add-in to work, some appointments doubled up. When I clicked on one to change, or deleted the double up, I get the same malicious code message.

When I click OK to the error message , the main message area goes blank, until I click on "Appointment" under the schedule assistant tab area at the top. The appointment wording then reappears.

Then I can alter or delete the appointment.

I also find if creating a new appointment, the same behaviour happens.

Jeronimo, do you advise I do the same to the ActiveX in this case?

If so, the only problem is I get to Trust Centre settings and unable to see an ActiveX settings area. Or do you recommend something else to check before in this case.
Francis 0 Reputation points

2026-03-02T21:01:39.6733333+00:00

In Outlook: File -> Option -> Add-ins -> At the bottom, in Manage make sure it say COM Add-ins and click on Go next to it -> Un-click any 3rd party/not Microsoft Add-Ins and click OK.
This fixed my problem.

3 answers

Your answer

BForensicExpertPro 0 Reputation points

2025-07-23T18:13:30.26+00:00

Correction. I did not have a link to the solution. This is not where I got it, but it says the same thing

https://www.techrepublic.com/article/microsoft-office-activex-disable-default/#:~:text=In%20an%20Office%20app%2C%20navigate,ActiveX%E2%80%9D%20to%20%E2%80%9Co.%E2%80%9D
DebR 20 Reputation points

2025-08-06T10:02:51.3033333+00:00

Hi Jeronimo, I have a similar problem as I have setup a New computer with Professional plus 2024 and has Classic Outlook.

When setting up ICloud to sync, and having to tick the iCloud Add-in to work, some appointments doubled up. When I clicked on one to change, or deleted the double up, I get the same malicious code message.

When I click OK to the error message , the main message area goes blank, until I click on "Appointment" under the schedule assistant tab area at the top. The appointment wording then reappears.

Then I can alter or delete the appointment.

I also find if creating a new appointment, the same behaviour happens.

Jeronimo, do you advise I do the same to the ActiveX in this case?

If so, the only problem is I get to Trust Centre settings and unable to see an ActiveX settings area. Or do you recommend something else to check before in this case.
Francis 0 Reputation points

2026-03-02T21:01:39.6733333+00:00

In Outlook: File -> Option -> Add-ins -> At the bottom, in Manage make sure it say COM Add-ins and click on Go next to it -> Un-click any 3rd party/not Microsoft Add-Ins and click OK.
This fixed my problem.

Answer 1

Jeronimo Fuerte 45,750 Independent Advisor

Hi! Newer Office versions now disable all ActiveX by default to reduce attack surface .

Enabling ActiveX is only advisable if you have complete trust in the form’s source and there are no alternative options, such as converting it to a non-ActiveX-based custom form. Otherwise, malicious forms could potentially execute code through hidden or untrusted ActiveX controls.

Maybe a different option could be to:

In Outlook, go to File > Options > Trust Center > Trust Center Settings> ActiveX Settings
Choose Prompt me before enabling all controls with minimal restrictions.
Save and re-open Outlook

BForensicExpertPro 0 Reputation points

2025-07-24T16:58:38.05+00:00

Microsoft 365's support went that route and it did not work (Trust Center settings).
Catherine P 0 Reputation points

2026-05-11T17:10:49.32+00:00

In my Outlook Classic, there is no ActiveX Settings

Answer 2

Jeronimo Fuerte 45,750 Independent Advisor

Then you just need to be careful about your Email attachments to avoid issues

BForensicExpertPro 0 Reputation points

2025-07-25T02:00:38.5233333+00:00

Thank you. I already am careful but I know with this lowered security I have to be that much more careful.

Answer 3

bagard 15

We have had this issue with a user, and went into the registry and created this key:

Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\Common\Security, then select "disable allactiveX and set to 0

BForensicExpertPro 0 Reputation points

2025-08-25T15:24:42.13+00:00

I did not do that with the registry key but there was a checkbox option through one of the interfaces and it did not work. I wi try the registry kept method
Catherine P 0 Reputation points

2026-05-11T17:07:16.83+00:00

For weeks, I was searching for a solution. This was it! Thank you!