: If you recently changed your Apple ID password or two-factor authentication settings, the existing certificate may be marked as invalid by Apple.
: Ensure both your computer and iOS device are set to "Set Automatically." If the times are out of sync, the security certificate will appear invalid. Remove Existing Profiles : altstore-the-provisioning-profile-is-invalid
: For free Apple Developer accounts, provisioning profiles expire every 7 days . If you have reached your limit of 10 App IDs per week, AltStore cannot generate a new valid profile until one expires. : If you recently changed your Apple ID
: In the AltStore app, go to My Apps and tap the App IDs button in the top left. If you have multiple IDs for the same app, you may need to wait for them to expire (up to 7 days) before a new valid profile can be created. Advanced Fixes If you have reached your limit of 10
: If you are on a public or work Wi-Fi, the network may be blocking the "Bonjour" service AltStore uses to communicate, causing profile generation to fail.