Add in installed does not appear in classic Outlook

[mabel-copilot]

Dear all,

We are having an issue regarding to a custom addin.

We have developed a custom addin for Outlook, and we have installed it through the admin web and it appears and it works correctly in new version also in Outlook web , but does not work at classic version. It appears as an installed app in desktop Outlook (manage apps panel) but never works as a command in the emails, never appear the corresponding button.

Thank in advance

[DivyaPatidar]

@mabel-copilot Can you try following and see if you can see Add-in

1. Enable "Turn on optional connected experiences": Go to File -> Options -> General. Click the Privacy Settings button and check Turn on optional connected experiences.
2. Check for Disabled Add-ins: Sometimes add-ins can get disabled. To check this, go to File -> Options -> Add-ins. At the bottom of the window, if you see Disabled Items, select it and click Go. If your add-in is listed there, you can enable it.

If it does not help, can you help answer following questions :
Can you confirm this is on Outlook for Windows ?
Can you shared Outlook build version?
What type of addin is it - Taskpane, UIless, event based etc.?
Do you see any other addins in classic UI ?

[mabel-copilot]

Good morning @DivyaPatidar,

Thank you for your response. I've tried the options you mentioned before writting the question but all seems ok, "optional connected experience" is enabled and there is no items at Disabled Items List.

And regarding to your questions:

• Yes, We use Outlook for Windows
• The outlook build version is:
  
• Taskpane Add In, built with Yeoman generator and react

We can see the official addins, I mean no custom add ins at the classic UI.

Thank you for the support

[timwan10]

Can you upload your manifest that repros the problem?

[Mabelinaa]

Hi all,

Please, fin attached the manifest requested.

Thank you in advance

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<OfficeApp xmlns="http://schemas.microsoft.com/office/appforoffice/1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:bt="http://schemas.microsoft.com/office/officeappbasictypes/1.0" xmlns:mailappor="http://schemas.microsoft.com/office/mailappversionoverrides/1.0" xsi:type="MailApp">
  <Id>f4efc78a-5b36-46eb-8d83-6fcff0203469</Id>
  <Version>2.0.0.0</Version>
  <ProviderName>Aelca</ProviderName>
  <DefaultLocale>es-ES</DefaultLocale>
  <DisplayName DefaultValue="Gestor de metadatos"/>
  <Description DefaultValue="Complemento para la gestión de correos no procesados automaticamente."/>
  <IconUrl DefaultValue="https://.../Headerlogo.png"/>
  <HighResolutionIconUrl DefaultValue="https://.../Headerlogo.png"/>
  <SupportUrl DefaultValue="https://www.....es/help"/>
  <AppDomains>
    <AppDomain>https://www.aelca.es</AppDomain>
  </AppDomains>
  <Hosts>
    <Host Name="Mailbox"/>
  </Hosts>
  <Requirements>
    <Sets>
      <Set Name="Mailbox" MinVersion="1.1"/>
    </Sets>
  </Requirements>
  <FormSettings>
    <Form xsi:type="ItemRead">
      <DesktopSettings>
        <SourceLocation DefaultValue="https://aelcadcstorage.z6.web.core.windows.net/taskpane.html"/>
        <RequestedHeight>250</RequestedHeight>
      </DesktopSettings>
    </Form>
  </FormSettings>
  <Permissions>ReadWriteItem</Permissions>
  <Rule xsi:type="RuleCollection" Mode="Or">
    <Rule xsi:type="ItemIs" ItemType="Message" FormType="Read"/>
  </Rule>
  <VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides" xsi:type="VersionOverridesV1_0">
    <VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides/1.1" xsi:type="VersionOverridesV1_1">
      <Requirements>
        <bt:Sets DefaultMinVersion="1.3">
          <bt:Set Name="Mailbox"/>
        </bt:Sets>
      </Requirements>
      <Hosts>
        <Host xsi:type="MailHost">
          <DesktopFormFactor>
            <FunctionFile resid="Commands.Url"/>
            <ExtensionPoint xsi:type="MessageReadCommandSurface">
              <OfficeTab id="TabDefault">
                <Group id="msgReadGroup">
                  <Label resid="GroupLabel"/>
                  <Control xsi:type="Button" id="msgReadOpenPaneButton">
                    <Label resid="TaskpaneButton.Label"/>
                    <Supertip>
                      <Title resid="TaskpaneButton.Label"/>
                      <Description resid="TaskpaneButton.Tooltip"/>
                    </Supertip>
                    <Icon>
                      <bt:Image size="16" resid="Icon.16x16"/>
                      <bt:Image size="32" resid="Icon.32x32"/>
                      <bt:Image size="80" resid="Icon.80x80"/>
                    </Icon>
                    <Action xsi:type="ShowTaskpane">
                      <SourceLocation resid="Taskpane.Url"/>
                    </Action>
                  </Control>
                </Group>
              </OfficeTab>
            </ExtensionPoint>
          </DesktopFormFactor>
        </Host>
      </Hosts>
      <Resources>
        <bt:Images>
          <bt:Image id="Icon.16x16" DefaultValue="https://...Headerlogo.png"/>
          <bt:Image id="Icon.32x32" DefaultValue="https://...Headerlogo.png"/>
          <bt:Image id="Icon.80x80" DefaultValue="https://...Headerlogo.png"/>
        </bt:Images>
        <bt:Urls>
          <bt:Url id="Commands.Url" DefaultValue="https://.../commands.html"/>
          <bt:Url id="Taskpane.Url" DefaultValue="https://.../taskpane.html"/>
        </bt:Urls>
        <bt:ShortStrings>
          <bt:String id="GroupLabel" DefaultValue="Gestor Documental"/>
          <bt:String id="TaskpaneButton.Label" DefaultValue="Mostrar metadatos"/>
        </bt:ShortStrings>
        <bt:LongStrings>
          <bt:String id="TaskpaneButton.Tooltip" DefaultValue="Gestionar metadatos"/>
          <bt:String id="ActionButton.Tooltip" DefaultValue="Mostrar datos del documento."/>
        </bt:LongStrings>
      </Resources>
    </VersionOverrides>
  </VersionOverrides>
</OfficeApp>
```

Mabel