Unsigned usually means that when using a program or software, you can't provide a certificate to sign it. The role of the certificate in the program or service is similar to the identity documents used by people in online shopping. When there is no signature available, it means that the program or service cannot provide the necessary authentication, and at the same time, it cannot guarantee its security and reliability.

The unavailability of signature may have a serious impact on software or services, such as bringing security risks and usage problems to users. For some important software or applications, if there is a problem that no signature is available, it may lead to its failure to operate normally or be threatened by network attacks. Therefore, when using computers or mobile phones, you should try to avoid using software or services of unknown origin to reduce the risk of no signature.

We can take some effective measures to solve the problem of no signature. For example, you can refer to related software official website or forums to find relevant solutions to the problem of unavailable signatures. In addition, when using some services that need to provide certificates, you need to pay attention to relevant tips and explanations to ensure the normal provision of certificates. The most important thing is to ensure the security of computers or mobile phones and avoid running viruses or malicious software, which is also the key to solve the problem of no signature.