Hubspot add-in failing to install

[SDowsell]

Hi,

I have a user who previously had the add in installed but it stopped working and disappeared from the ribbon in Outlook. I have tried to reinstall and although Outlook adds the add-in, it is not enabled and when I try I get the below error:

Name: HubSpot Sales for Outlook - HubSpot Sales for Outlook
From: https://dl.getsidekick.com/outlook/vsto/Sidekick.vsto

************** Exception Text **************
System.Deployment.Application.InvalidDeploymentException: HTTP redirect is not allowed for application files and assemblies. Cannot download Sidekick.resources.dll.
   at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.DownloadAddIn(TimeSpan timeout)
   at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.InstallAddIn()

Any ideas on what the issue might be?

Thanks.

[karstenkoehler · Accepted solution]

Hi @SDowsell,

Microsoft has ended support for the VSTO add-in, see here: https://knowledge.hubspot.com/connected-email/get-started-with-the-outlook-desktop-add-in

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Please note: due to the significant changes introduced by Microsoft as part of the new Outlook for Windows, HubSpot will no longer actively develop or improve the HubSpot Sales Outlook desktop add-in. While the HubSpot Sales Outlook desktop add-in is still available in the old Outlook for Windows and will continue to be supported, it's highly recommended that you activate the HubSpot Sales web add-in instead. If you're using the Outlook desktop add-in, the HubSpot Sales web add-in will automatically be installed if you switch to the new Outlook for Windows. Learn more in this HubSpot Community post.

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If you're using the new Outlook, then unfortunately this would not be unexpected behavior, unfortunately.

An alternative would be the web-add-in: https://knowledge.hubspot.com/connected-email/get-started-with-the-hubspot-sales-office-365-add-in

Best regards