# Setting vanityID when using StartParam4WithoutLogin causes SDKERR\_INVALID\_PARAMETER

**URL:** <https://devforum.zoom.us/t/setting-vanityid-when-using-startparam4withoutlogin-causes-sdkerr-invalid-parameter/103779>\
**Category:** Windows\
**Created:** [February 13, 2024, 5:32pm UTC](https://devforum.zoom.us/t/setting-vanityid-when-using-startparam4withoutlogin-causes-sdkerr-invalid-parameter/103779 "2024-02-13T17:32:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![branden](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/branden/32/50272_2.png) [@branden](https://devforum.zoom.us/u/branden)\
**Post date:** [February 13, 2024, 5:32pm UTC](https://devforum.zoom.us/t/setting-vanityid-when-using-startparam4withoutlogin-causes-sdkerr-invalid-parameter/103779/1 "2024-02-13T17:32:10Z")

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**Description**  
We’re using the StartParam4WithoutLogin class in a to allow a user to start a meeting using our C# app. Recently we found out that users have been unable to start meetings and we were seeing SDKERR\_INVALID\_PARAMETER. After a lot of troubleshooting including updating the SDK to the most recent version (5.17.6.31095) we discovered that the meetings would start as long as we did NOT set the vanityID property of our StartParam4WithoutLogin object.

**Which Windows Meeting SDK version?**  
Windows C# wrapper 5.17.6.31095

**To Reproduce(If applicable)**  
Steps to reproduce the behavior:

1. Using StartParam4WithoutLogin try to start a meeting with the vanityID property set
2. The meeting will not start and you’ll receive a SDKERR\_INVALID\_PARAMETER error

**Troubleshooting Routes**  
Tested both with our code and in the sample app.

**Device (please complete the following information):**

- Device: Multiple Windows PCs
- OS: Windows 10 and 11

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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:** [March 15, 2024, 3:33am UTC](https://devforum.zoom.us/t/setting-vanityid-when-using-startparam4withoutlogin-causes-sdkerr-invalid-parameter/103779/2 "2024-03-15T03:33:01Z")

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Closed on March 15, 2024, 3:33am UTC

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