The encryption attempt failed because no valid certificate was found.

因为没有找到有效的加密算法造成加密请求失败。

youdao

The Unified Messaging server will look for a valid certificate in this order.

统一消息服务器将按下面的顺序查找有效证书。

youdao

Certificate authentication in this scenario really means "is the server providing a valid certificate?"

在此场景中的证书认证实际上意味着“是服务器提供了有效的证书吗？”

youdao

Conservative Karl McCartney suggested it should be made compulsory to display a valid insurance certificate or sticker in the window of a vehicle, in the same way a tax disk had to be shown.

BBC: MPs urge action on cheaper car insurance

Landlords who do not have a valid Energy Performance Certificate (EPC) issued by an authorised assessor will be given seven days to provide one.

BBC: Slough landlords checked for energy ratings certificates

With these forms of ownership, your beneficiaries would simply need to provide a death certificate and a valid form of ID to take ownership of the property.

FORBES: Is Lack of Planning Putting Your Family in Danger?