Item Multi Select Add-in not working as expected

[fabiorodriguesdev]

Article URL
On what page did you find the problem?
docs/outlook/item-multi-select.md

Describe the problem
A clear and concise description of what is incorrect, unclear, or missing in the document.

• the multi email selection add in doesn't work on outlook new, still shows up only when selecting one email alone.

[fabiorodriguesdev]

My manifest.

{
  "$schema": "https://developer.microsoft.com/json-schemas/teams/v1.17/MicrosoftTeams.schema.json",
  "id": "c8ee4b8f-2145-4b0f-913a-2b9dbd45e5b7",
  "manifestVersion": "1.17",
  "version": "1.0.0",
  "name": {
    "short": "test",
    "full": "Contoso Task Pane Add-in"
  },
  "description": {
    "short": "A template to get started.",
    "full": "This is the template to get started."
  },
  "developer": {
    "name": "Contoso",
    "websiteUrl": "https://www.contoso.com",
    "privacyUrl": "https://www.contoso.com/privacy",
    "termsOfUseUrl": "https://www.contoso.com/servicesagreement"
  },
  "icons": {
    "outline": "assets/outline.png",
    "color": "assets/color.png"
  },
  "accentColor": "#230201",
  "localizationInfo": {
    "defaultLanguageTag": "en-us",
    "additionalLanguages": []
  },
  "authorization": {
    "permissions": {
      "resourceSpecific": [
        {
          "name": "Mailbox.ReadWrite.User",
          "type": "Delegated"
        }
      ]
    }
  },
  "validDomains": ["contoso.com"],
  "extensions": [
    {
      "requirements": {
        "scopes": ["mail"],
        "capabilities": [
          {
            "name": "Mailbox",
            "minVersion": "1.13"
          }
        ]
      },
      "runtimes": [
        {
          "requirements": {
            "capabilities": [
              {
                "name": "Mailbox",
                "minVersion": "1.13"
              }
            ]
          },
          "id": "TaskPaneRuntime",
          "type": "general",
          "code": {
            "page": "https://localhost:3000/taskpane.html"
          },
          "lifetime": "short",
          "actions": [
            {
              "id": "TaskPaneRuntimeShow",
              "type": "openPage",
              "pinnable": false,
              "view": "dashboard",
              "supportsNoItemContext": true,
              "multiselect": true
            }
          ]
        }
      ],
      "ribbons": [
        {
          "contexts": ["mailRead"],
          "tabs": [
            {
              "builtInTabId": "TabDefault",
              "groups": [
                {
                  "id": "msgReadGroup",
                  "label": "Contoso Add-in",
                  "icons": [
                    {
                      "size": 16,
                      "url": "https://localhost:3000/assets/icon-16.png"
                    },
                    {
                      "size": 32,
                      "url": "https://localhost:3000/assets/icon-32.png"
                    },
                    {
                      "size": 80,
                      "url": "https://localhost:3000/assets/icon-80.png"
                    }
                  ],
                  "controls": [
                    {
                      "id": "msgReadOpenPaneButton",
                      "type": "button",
                      "label": "Show Task Pane",
                      "icons": [
                        {
                          "size": 16,
                          "url": "https://localhost:3000/assets/icon-16.png"
                        },
                        {
                          "size": 32,
                          "url": "https://localhost:3000/assets/icon-32.png"
                        },
                        {
                          "size": 80,
                          "url": "https://localhost:3000/assets/icon-80.png"
                        }
                      ],
                      "supertip": {
                        "title": "Show Task Pane",
                        "description": "Opens a pane displaying all available properties."
                      },
                      "actionId": "TaskPaneRuntimeShow"
                    }
                  ]
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}

[github-actions]

Here are some similar issues that might help you. Please check if they can solve your problem.

• Outlook add-in - multiselect not working #3107
• Not able to open web add-in after selecting multiple emails in New Outlook  #3441

---

Possible solution (Extracted from existing issue, might be incorrect; please verify carefully)

Solution 1:

To verify that your Outlook client is on the Beta Channel, see How to get Microsoft 365 Insider builds on Windows. I noted in your manifest that the item multi-select tag is configured as <SupportsMultiselect>true</SupportsMultiselect>. Because XML is case-sensitive, please update this to <SupportsMultiSelect>true</SupportsMultiSelect> instead.

Reference:

• Outlook add-in - multiselect not working #3107 (comment)

Solution 2:

The issue has been fixed. Closing.

Reference:

• Not able to open web add-in after selecting multiple emails in New Outlook  #3441 (comment)

[ElizabethSamuel-MSFT]

@fabiorodriguesdev Thanks for letting us know about this issue.

@exextoc Can you take a look?

Thanks.