# When try to start meeting in return error InvalidArguments

**URL:** <https://devforum.zoom.us/t/when-try-to-start-meeting-in-return-error-invalidarguments/54702>\
**Category:** iOS\
**Tags:** faq-ios\
**Created:** [July 26, 2021, 6:23am UTC](https://devforum.zoom.us/t/when-try-to-start-meeting-in-return-error-invalidarguments/54702 "2021-07-26T06:23:23Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![masterlyapp](https://avatars.discourse-cdn.com/v4/letter/m/b5a626/32.png) [@masterlyapp](https://devforum.zoom.us/u/masterlyapp)\
**Post date:** [July 26, 2021, 6:23am UTC](https://devforum.zoom.us/t/when-try-to-start-meeting-in-return-error-invalidarguments/54702/1 "2021-07-26T06:23:23Z")

</div>

when try to start meeting in ios not open any think and return error MobileRTCMeetError\_InvalidArguments

```auto
        let parameters = MobileRTCMeetingStartParam()
            parameters.meetingNumber = meetingNumber;
           parameters.isAppShare=true;
        meetingService.delegate = self
   
        var a = meetingService.startMeeting(with: parameters)

```

app in ios 13 developemnt

---

<div class="post-metadata">

**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\
**Post date:** [July 26, 2021, 7:28pm UTC](https://devforum.zoom.us/t/when-try-to-start-meeting-in-return-error-invalidarguments/54702/2 "2021-07-26T19:28:25Z")

</div>

Hey @masterlyapp,

Thanks for using the dev forum!

Is this user already logged into Zoom?

Thanks!  
Michael

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [August 26, 2021, 5:29am UTC](https://devforum.zoom.us/t/when-try-to-start-meeting-in-return-error-invalidarguments/54702/3 "2021-08-26T05:29:05Z")

</div>

Closed on August 26, 2021, 5:29am UTC

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.