Where is vsto suppressdisplayalerts

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Home Scheduling Meetings Outlook for Windows. Current Visibility: Viewable by all users. This opens the System Properties dialog. Select the Advanced tab Click Environment Variables Click OK and restart Microsoft Outlook. I'm developing using VS , and. Any advice that I could give you would be echoing Hamed's blog post on this subject , though you'll obviously want to replace "Excel" with "Outlook" in your case.

There is also a script listed int eh announcements section of this blog that will help you out. I believe you posted your question on my blog, right? I am following up with the question there. I disale this checkbox but it gets re-enabled when I Build the project Net 4. Learn More. Ask a question.

Quick access. Look into the event log. Some other observations: LoadBehavior in the registry stays at 3. The add-in shows up as "disabled" in Outlook. Checking its checkbox in "COM add-ins" just does nothing no error, checkbox is cleared again when entering the form a second time. It works perfectly fine on other customer machines, and it worked perfectly fine on this machine. No, the customer cannot tell me what changed on his machine. I have a Trace. Improve this question. John Heinzi Heinzi k 52 52 gold badges silver badges bronze badges.

The question and its answers helped me with an Excel Add-In. Heinzi - thanks for asking this question, I added most of the other solutions that trip people up.

The Disabled one is easy to fix unless it happens on citrix Please also see this for Outlook changing LoadBehavior to 0: stackoverflow. Did you check the manifest file is present at proper location?

Show 1 more comment. Active Oldest Votes. Here's a bit more detail on RobertG5's solution too long for a comment : The problem was that the add-in had been hard disabled by Outlook. So, how do I re-enable a hard disabled add-in? Select the add-in and click Enable. Click Close. Click OK. Improve this answer. Thank you for the reference. I add that for Microsoft Office applications list of disabled addins is placed in "Help-About" menu.

Add a comment. Gardner Gardner 7 7 silver badges 6 6 bronze badges. No error message whatsoever appears. I mean checking the disabled addin queue not your unchecked add-in. In the add-in type drop down its the last item in the list. Its like purgatory for potentially bad add-ins. Sorry for reading your answer wrong the first time the downvote is not from me, btw. I'll mark yours as the answer, but I'll keep my answer here as well, since it's bit more verbose. It appears if the plugin crashes it will be added to the disabled plugins.

I'm not sure if the plugin crashed too many times or Outlook determined that they type of crash was severe enough, anyways you have to remove it from there first. Trying to enable it otherwise won't work. If you're still having issues try wrapping everything in the app start in a try catch. The Add-In is not loaded. Not loaded. The problem is due to missing. Net framework 3. The Add-In is not visible. The Add-In was disabled.

Jeremy Thompson Jeremy Thompson Manage needs to be set to Disabled Items was the kicker for me. Brilliant answer.