Outlook Add-in deactivated due to slow start, how to change timer?

Sbrikdk 1 Reputation point


I was wondering if anyone had a solution to how to get around this funny error message we get in Outlook due to an installed Add-in. Bear in mind that I am translating freely so the message might not be what is shown in English, and also I am leaving the product out, because I want it to be a talk about what options Outlook provides, not what the vendor can do ;) There is nothing secret as such about the product:

"Message about Add-in: Outlook deactivated the add-in : "Name of add-in". It made Outlook start slowly <Show more details>".

However, the Add-in is usually about 2-3 seconds to start, my latest start of Outlook was 1.2 seconds for the add-in.

I cannot find anywhere in registry or similar where I can modify this timer, which to me seems just a tad aggressive?

Also, it is not an option to "Do not monitor this add-in for 30 days" as it will still end up bringing an alert to users and end on the deactivated list.

Any suggestions?


Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Faery Fu-MSFT 17,901 Reputation points Microsoft Vendor

    Hi @Sbrikdk ,

    Programs in Office 2013 and later versions provide add-in resiliency in that the apps will disable an add-in if it performs slowly.

    For example, the startup metric measures the time required by each connected add-in during Outlook startup. Outlook then computes the median startup time over 5 successive iterations. If the median startup time exceeds 1000 milliseconds (1 second), then Outlook disables the add-in and displays a notification to the user that an add-in has been disabled. The user has the option of always enabling the add-in, in which case Outlook will not disable the add-in even if the add-in exceeds the 1000 millisecond performance threshold.

    *(Important: Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur. *)
    You can always enable this add-in through the registry:
    Key: HKEY_CURRENT_USER\Software\Microsoft\Office\x.0\<application>\Resiliency\DoNotDisableAddinList
    DWORD: < ProgID of the add-in>

    More information, see: Add-ins are user re-enabled after being disabled by Office programs

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  2. Oskar Shon 866 Reputation points MVP

    Hi Sbrikdk
    I create add-ins and a saw the same problem. I change my HD for SSD and problem solved immediately. You can read about hat there: powolne-i-wylaczone-dodatki-com
    However some of my clients do not want to do that because that create budget problems and they do not want to change anything in registry then I wrote a simple application to change this unexpected records in registry.
    You can used it any time if you want: s!AorogM43_3CRjMENyIAIbYCUlhnrdg

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  3. Oskar Shon 866 Reputation points MVP

    Dear Sbrikdk-2748, I do not know why you ignore my post.
    I send you a link to app remove bad lines in registry and send you a link to article I wrote it 2018 how to unblock it from application.
    Nothing change to this moment.
    However I writing you up there about solution to change speed your hard drive I tested and works with success.
    I do know how you can turning around had that information.