# SDKERR\_INVALID\_PARAMETER on Start Meeting with StartParam4WithoutLogin

**URL:** <https://devforum.zoom.us/t/sdkerr-invalid-parameter-on-start-meeting-with-startparam4withoutlogin/78359>\
**Category:** Windows\
**Created:** [November 5, 2022, 6:57pm UTC](https://devforum.zoom.us/t/sdkerr-invalid-parameter-on-start-meeting-with-startparam4withoutlogin/78359 "2022-11-05T18:57:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nilefire103](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/nilefire103/32/30296_2.png) [@nilefire103](https://devforum.zoom.us/u/nilefire103)\
**Post date:** [November 5, 2022, 6:57pm UTC](https://devforum.zoom.us/t/sdkerr-invalid-parameter-on-start-meeting-with-startparam4withoutlogin/78359/1 "2022-11-05T18:57:32Z")

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Using Latest version : zoom-c-sharp-wrapper-5.12.2.9319 (x86)  
On start meeting getting error : SDKERR\_INVALID\_PARAMETER

here is my code:

StartParam4WithoutLogin withoutLoginUser = new StartParam4WithoutLogin();  
withoutLoginUser.userID = AppGlobal.LoggedInUser.UserDetails.UserEmail;  
withoutLoginUser.userZAK = AppGlobal.LoggedInUser.UserDetails.Token;  
withoutLoginUser.userName = AppGlobal.LoggedInUser.UserDetails.Data.UserName;  
withoutLoginUser.zoomuserType = ZoomUserType.ZoomUserType\_APIUSER;  
withoutLoginUser.meetingNumber = Convert.ToUInt64(AppGlobal.LoggedInUser.UserDetails.Data.MeetingNo);  
withoutLoginUser.isDirectShareDesktop = true;  
withoutLoginUser.isVideoOff = true;  
withoutLoginUser.isAudioOff = false;

StartParam startParam = new StartParam();  
startParam.withoutloginStart = withoutLoginUser;  
startParam.userType = SDKUserType.SDK\_UT\_WITHOUT\_LOGIN;

SDKError sdkErr = CZoomSDKeDotNetWrap.Instance.GetMeetingServiceWrap().Start(startParam);  
if (sdkErr != SDKError.SDKERR\_SUCCESS) **//Getting status =\> SDKERR\_INVALID\_PARAMETER**  
{  
MessageBox.Show("Some Error Occurred In Start Meeting : " + sdkErr.ToString(), “Error Occurred”, MessageBoxButtons.OK, MessageBoxIcon.Stop);  
}

Please let me know where is the issue ? what i am missing ?  
SDK Key, SDK Secret and ZAK is fine, I have checked multiple times

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<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:** [December 6, 2022, 4:58am UTC](https://devforum.zoom.us/t/sdkerr-invalid-parameter-on-start-meeting-with-startparam4withoutlogin/78359/2 "2022-12-06T04:58:15Z")

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Closed on December 6, 2022, 4:58am UTC

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