1. For expired certificates, just delete them directly. If you still need to use it, you need to download it again, and the certificate cannot be updated.
2. Some certificates need a special account when downloading. For example, during the development of ios, if you want to compile on a real machine, you need to download a development certificate. The certificate needs to be downloaded and used by the developer account (99 USD/year), and ordinary users cannot compile it when logging in.
Second, how to solve the expiration of the ios certificate?
1. New WWDR certificate and install it.
2. Open the keychain, select "Show-Show Expired Certificates" on the navigation bar, and then select "Delete Expired Certificates".
Third, the stability method of ios Apple signature certificate
1. Installed capacity of enterprise certificate. Generally speaking, the enterprise certificate
Books are for employees in their own enterprises. If the installed capacity reaches 1 million, it will definitely be detected by Apple, and it is likely to be considered as a violation of the Apple agreement. Therefore, the more application and installation of enterprise certificate signature, the greater the possibility that enterprise certificate will be sealed.
2. Installed quantity of p 12 generated by enterprise developer certificate. According to past experience, generally, the number of p 12 certificates should not exceed three computers, otherwise it may feel unsafe, which may trigger Apple's security mechanism and lead to the closure of certified enterprise certificates.
3. The number of revocations generated by enterprise certificates. Repeated generation and revocation of corporate certificates will also trigger Apple's security mechanism, leading to the closure of corporate accounts.