1. Network problem: If the network connection of Tencent classroom is unstable or too slow, the download will fail. You can try changing the network environment and try again.
2. Software problem: Tencent classroom can't be downloaded because there is something wrong with Tencent classroom software itself. You can try uninstalling and reinstalling it.
3. Permission problem: Limited download permission will also make Tencent classroom unable to download. You can view and modify related permissions in the settings.