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| Reason  | Solution  |
| ------------ | ------------ |
| SteamVR is not installed  | Refer to https://www.pingxingyun.com/online/vr3_2.html?id=449 Install steamVR|
| The server SteamVR does not start properly  | Check to see if the sound card driver is installed correctly, if the video card driver is updated to the latest, and if the necessary VC dependency libraries are installed。 Refer to https://www.pingxingyun.com/online/vr3_2.html?id=449 |
|Firewall not off|Disable firewall|
|The UDP port is unavailable. Procedure|Open UDP port|
|Security software blocks application startup|Turn off security software|
|steamVR version issues|Install steamVR latest version|
|Communication problem|Normally, when udp packets are transmitted from the server to the client, the ip address 0.0.0.0 can be used. However, due to some special networks, ipv4 addresses must be configured for communication. The listening IP address of the VR rendering server needs to be configured。Open larkxr-render/application.properties.![](https://docs.paraverse.cc/media/202504/8d97c3c2bee04591ac39c0019f3517591137.png)|