Install error help

Error or problem Unable to Verify App Integrity could not be verified App cannot be installed Certificate password or .p12 problem Provisioning profile or UDID issue ESign import problem Feather import problem

Quick checks

Make sure the UDID is correct, the mobileprovision file matches the device, and the certificate password is exact.

Why a signed app can fail

iOS checks the IPA, signing certificate, provisioning profile, bundle identifier, entitlements, and registered device before allowing an app to open. A valid certificate by itself is not enough: the certificate and mobileprovision file must belong together, and the profile must include the exact UDID of the device receiving the app.

An older installation can also conflict with a newly signed copy. If an app was previously installed with another certificate, delete that copy before retrying. Use a fresh IPA when possible, import the matching certificate files again, and sign the app as a new job.

Choose the right diagnostic

• For verification, integrity, provisioning, and installation messages, open the complete iPhone signing error guide.
• If you are unsure which identifier belongs to your device, use the CertDrop UDID tool.
• Check an IPA before signing with the IPA compatibility checker.
• Verify profile expiry, UDID inclusion, certificate password, and file matching with the certificate health check.

Record the exact iOS error before changing files. That message helps distinguish a damaged IPA from a certificate, profile, UDID, or trust problem.