[GH-ISSUE #269] Outlook moaning about slow Add-on start #1162

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opened 2026-03-14 00:30:28 +03:00 by kerem · 4 comments

kerem commented

2026-03-14 00:30:28 +03:00

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Originally created by @Mannshoch on GitHub (Nov 19, 2019).
Original GitHub issue: https://github.com/aluxnimm/outlookcaldavsynchronizer/issues/269

Please speed-up the Add-on Start. So I do not need to tell Outlook to ignore this app measurements.

Originally created by @Mannshoch on GitHub (Nov 19, 2019). Original GitHub issue: https://github.com/aluxnimm/outlookcaldavsynchronizer/issues/269 Please speed-up the Add-on Start. So I do not need to tell Outlook to ignore this app measurements.

kerem commented

2026-03-14 00:30:34 +03:00

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@affinityv commented on GitHub (Nov 20, 2019):

How do you tell Outlook to ignore app measurements?

I've had this problem too, with users disabling the add-on and then having issues with the add-on not loading on startup which I had to adjust in the registry because there doesn't seem to be any other ay to change the "startup" setting....

@affinityv commented on GitHub (Nov 20, 2019): How do you tell Outlook to ignore app measurements? I've had this problem too, with users disabling the add-on and then having issues with the add-on not loading on startup which I had to adjust in the registry because there doesn't seem to be any other ay to change the "startup" setting....

kerem commented

2026-03-14 00:30:39 +03:00

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@aluxnimm commented on GitHub (Nov 20, 2019):

We did already optimize the startup. Those issues can't be avoided totally but there are those mentioned registry settings to customize the behaviour, see also

https://developermessaging.azurewebsites.net/2017/08/02/outlooks-slow-add-ins-resiliency-logic-and-how-to-always-enable-slow-add-ins/

@aluxnimm commented on GitHub (Nov 20, 2019): We did already optimize the startup. Those issues can't be avoided totally but there are those mentioned registry settings to customize the behaviour, see also https://developermessaging.azurewebsites.net/2017/08/02/outlooks-slow-add-ins-resiliency-logic-and-how-to-always-enable-slow-add-ins/

kerem commented

2026-03-14 00:30:44 +03:00

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@Mannshoch commented on GitHub (Nov 21, 2019):

Nice Workaround... but still a workaround.
Is there no possibility to kind of lazy load or load the add-on in two steps or something else?

@Mannshoch commented on GitHub (Nov 21, 2019): Nice Workaround... but still a workaround. Is there no possibility to kind of lazy load or load the add-on in two steps or something else?

kerem commented

2026-03-14 00:30:49 +03:00

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@ace280 commented on GitHub (Jan 27, 2020):

I ran into the same problem and fixed it following this explanation: https://www.slipstick.com/outlook/always-load-an-outlook-addin/

As Microsoft writes, it seems to be possible to set those registry entries with the installer. So would this be a solution?

As far as I know, plugins like Citavi do that for Microsoft word.

@ace280 commented on GitHub (Jan 27, 2020): I ran into the same problem and fixed it following this explanation: https://www.slipstick.com/outlook/always-load-an-outlook-addin/ As [Microsoft writes](https://docs.microsoft.com/de-de/visualstudio/vsto/registry-entries-for-vsto-add-ins?redirectedfrom=MSDN&view=vs-2019), it seems to be possible to set those registry entries with the installer. So would this be a solution? As far as I know, plugins like Citavi do that for Microsoft word.