windows10神州网信政府版默认不允许访问麦克风、相机。可以通过修复注册表的方式，修改后重启

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\AppPrivacy]
"LetAppsAccessMicrophone"=dword:00000001
"LetAppsAccessMicrophone_UserInControlOfTheseApps"=hex(7):00,00
"LetAppsAccessMicrophone_ForceAllowTheseApps"=hex(7):00,00
"LetAppsAccessMicrophone_ForceDenyTheseApps"=hex(7):00,00
"LetAppsAccessCamera"=dword:00000001
"LetAppsAccessCamera_UserInControlOfTheseApps"=hex(7):00,00
"LetAppsAccessCamera_ForceAllowTheseApps"=hex(7):00,00
"LetAppsAccessCamera_ForceDenyTheseApps"=hex(7):00,00

放个截图：

有时可能要用组策略修改后重启才行。win键+R,运行gpedit.msc

计算机配置--管理模板--windows组件--应用隐私，修改“允许windows应用访问麦克风”、“允许windows应用访问相机”，原来配置是已启用-强制拒绝，修改为已启用-强制允许，重启电脑后生效。