Codemagic build failed: keystore was tampered with or password was incor

Not specified by the original author.

TL;DR

Supply the exact keystore credentials the file was created with, checking for whitespace, wrong variable mapping and a corrupted upload in Codemagic code signing settings. This Java keytool message appears both for a genuinely wrong store password and for a damaged or re-encoded keystore file. Re-upload the original binary keystore, re-enter its credentials as CI variables without copying stray characters, and verify locally with keytool before rebuilding.

keystore was tampered with or password was incorrect - Codemagic

Use this when

• Codemagic Android signing fails with this keytool message.
• Credentials were moved from another CI or retyped by hand.
• The keystore was stored as text, for example base64 handled incorrectly, at some point.

Not for this skill when

• The alias password differs from the store password and only the alias is wrong. keytool messages blur the two; test both locally.
• The keystore is the wrong file entirely, such as a debug keystore. Verify fingerprints.

Steps

1. Download or locate the original keystore file and test it locally with keytool list using the credentials you believe are correct. Verify: keytool lists the alias locally, proving file and credentials, or fails identically proving one is wrong
2. Compare the fingerprint Codemagic reports or the uploaded file size against the known-good local file. Verify: file sizes and fingerprints match, or the uploaded copy is confirmed corrupt
3. Re-upload the keystore to Codemagic as a binary file, never via a text field that could alter bytes. Verify: the code signing settings show the re-uploaded keystore
4. Re-enter the store and key passwords in Codemagic variables by typing rather than pasting from a document that may add spaces. Verify: variables are saved and masked in the UI
5. Check the workflow references the correct keystore entry name and alias. Verify: the workflow signing section names the same entry and alias as keytool lists
6. Rebuild in Codemagic. Verify: signing completes and the release AAB is produced
7. Record the fix in the release runbook or the CI job notes, naming the error, the value or setting that changed, and the date, so the next release engineer does not re-diagnose it from scratch. Verify: the runbook or job notes contain an entry for this error that a teammate can find by searching the error text

Why it happens

keytool cannot distinguish a wrong password from file corruption because both fail the integrity check the password provides. CI migrations introduce both: passwords gain trailing spaces through spreadsheets, and keystores get mangled when they pass through text-oriented secret stores. Local keytool verification separates file health from credential health before touching CI again.

In practice this failure is rarely a one-off. It tends to recur at the worst point in the release cycle, when a certificate, a toolchain, a store policy or a team process has quietly changed since the last successful release and nobody connected that change to the release pipeline. That is why the steps above insist on reading the actual store, portal or build state at each point instead of trusting configuration files or memory: the configuration usually describes the release the team intended to ship, while this error describes the release the systems actually see. Once the immediate upload or build is unblocked, treat the underlying drift as the real defect. Pin the toolchain version, expiry date, identifier or policy value that caused it in the release checklist, and add the cheapest automatic check that would have caught it before submission day, for example a preflight lane that validates signing, versions and metadata lengths before the full archive runs. A release pipeline that fails in preflight costs minutes; the same failure discovered at submission costs a day.

Variants and edge cases

Codemagic keystore tampered password incorrect fix

CI phrasing; re-upload the binary and re-enter credentials. When you land on this skill from that phrasing, start at step 1 rather than jumping to the most dramatic fix: the early steps are cheap state checks that confirm you are solving the failure you actually have, and they take minutes compared with a rebuild or a store-side change you cannot undo.

keytool keystore was tampered with or password was incorrect

Tool phrasing; test the file locally with keytool list first. When you land on this skill from that phrasing, start at step 1 rather than jumping to the most dramatic fix: the early steps are cheap state checks that confirm you are solving the failure you actually have, and they take minutes compared with a rebuild or a store-side change you cannot undo.

Edge case: JKS versus PKCS12 format

Newer keytools default to PKCS12. A format mismatch with old tooling can mimic corruption; check the format flag when listing. When you land on this skill from that phrasing, start at step 1 rather than jumping to the most dramatic fix: the early steps are cheap state checks that confirm you are solving the failure you actually have, and they take minutes compared with a rebuild or a store-side change you cannot undo.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_1Q2QyvU3eItyu1JjKsV5sw

Resolved from the public thread: https://vectle.com/posts/pst_1Q2QyvU3eItyu1JjKsV5sw

Thread query: Codemagic build failed: "keystore was tampered with or password was incorrect" error

TL;DR: Supply the exact keystore credentials the file was created with, checking for whitespace, wrong variable mapping and a corrupted upload in Codemagic code signing settings. This Java keytool message appears both for a genuinely wrong store password and for a damaged or re-encoded keystore file. Re-upload the original binary keystore, re-enter its credentials as CI variables without copying stray characters, and verify locally with keytool before rebuilding.

Not specified by the original author.

TL;DR

Re-encrypt the variable after fixing it and re-run the build.

Steps

1. Download the private API key from App Store Connect in .p8 format and paste the entire file contents into the environment variable value, including the begin and end lines. A truncated or reformatted key is the usual cause. Re-encrypt the variable after fixing it and re-run the build.

When to use

You are seeing this: Download the private API key from App Store Connect in.p8 format and paste the entire file contents into the environment variable value, including the begin and end lines. Use this skill when you run into "Codemagic: App Store Connect private key value is not valid".

When not to use

If your error message or symptom does not match what is described above, this is probably not your fix. Search for your exact error text instead of forcing this one to fit.

Versions

No specific versions are mentioned in the source material, so treat the fix as generally applicable and check the examples against whatever you have installed.

Why this happens

The original report does not dig into a root cause. It documents the symptom and the fix that resolved it.

Source: Stack Overflow #69510841 (accepted answer, 7 votes): the iOS signing step fails with APPSTORECONNECTPRIVATEKEY Provided value is not valid even though the key identifier and issuer ID are set. The accepted answer identifies the usual mistake: the private key value was not copied correctly.

Verified resolution: Download the private API key from App Store Connect in .p8 format and paste the entire file contents into the environment variable value, including the begin and end lines. A truncated or reformatted key is the usual cause. Re-encrypt the variable after fixing it and re-run the build.

Source URL: https://stackoverflow.com/questions/69510841/codemagic-app-store-connect-private-key-provided-value-is-not-valid

Not specified by the original author.

TL;DR

Rebuild the chain from the portal outward so the certificate, the profile created from it, and the identity the builder signs with are one matched set, then re archive instead of re uploading the same binary. Start in the Flutter build log, the Xcode project the Flutter tooling generates, and the Podfile, work on one affected item, and prove the fix there before running the full set. The named signal in this one is Signing for Runner requires a development team. Most cases of this failure clear once the value named in step 2 is corrected at its source rather than retried.

Xcode build failed "Signing for Runner requires a development team" error when archiving Flutter app

Use this when

• You see this exact message or symptom in Flutter: Xcode build failed Signing for Runner requires a development team error when archiving Flutter app
• One run, record, build, or object is affected and you can name it
• A retry without changing anything reproduces the same text

Not for this skill when

• Flutter fails with a different message and none of the signals here appear
• Nothing has failed yet and you are doing first time setup or general planning
• Every service from this vendor is down for all users, which is a vendor outage to wait out first

Steps

1. Reproduce the failure once in the Flutter build log, the Xcode project the Flutter tooling generates, and the Podfile and search the log or history for the exact text in the block above, recording the time, the workspace or project, and the one object it names. Verify: you have one failing run or object identified, not a similar older failure
2. Inspect the generated Xcode signing settings, the Podfile platform version, and the symbols the linker reports as missing, and check the certificate fingerprint, the profile created from it, and the identity reported inside the built archive. Verify: you can point to the specific value, field, or identity that does not match what this operation needs
3. Apply the fix at that source: rebuild the chain from the portal outward so the certificate, the profile created from it, and the identity the builder signs with are one matched set, then re archive instead of re uploading the same binary. Verify: the corrected value or setting is visible in Flutter itself, not only in a local config file
4. Re-run the original operation on the single affected item first: run flutter clean, rebuild the iOS release once, and read the first linker or pod error in order. Verify: that one item completes with no trace of the error text from the block above
5. Check the downstream result a user or the next job would see: the archive completing and the generated app passing validation in the Organizer. Verify: the downstream result agrees with the source for the test item, in value and in timestamp
6. Repeat for the full set, watch the first few items in the same log you started from, and write the root cause and the changed setting into the run notes. Verify: the full run finishes, the notes name the error and the changed setting, and no earlier item regressed

Variant phrasings

Xcode build failed Signing for Runner requires a development team error when archiving Flutter app

The subject-first phrasing of the same failure. The fix is the same, start at step 1 and confirm the object the log names.

Flutter Signing for Runner requires a development team during the run

The tool-first phrasing searchers use once they know which system raised it. It is the same underlying problem, not a separate bug.

Why does xcode build failed Signing for Runner requires a development team error when archiving Flutter app keep happening after a retry

The repeat-occurrence phrasing. A retry without the step 2 and step 3 checks almost always reproduces it, because the cause sits in the object state, not in the attempt.

Compatibility: Flutter 3.22 or later, CocoaPods, Xcode 15 or 16 generated projects. The steps assume you can read the job or build log and change the named object in Flutter.

Why it happens

In Flutter, this failure usually means the signing identity, profile, and certificate no longer form one matching chain, usually after a renewal, revocation, or a move to CI. The visible message is raised at the point where the bad state is consumed, which is rarely where it was created, so fixing the message text or retrying the last step changes nothing. Correcting the state at its source, then re-running one item and comparing the downstream result against the source, is what separates a real fix from a run that only looks successful.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_HNOstFtB3YyYMOoNW4Fn1g

Resolved from the public thread: https://vectle.com/posts/pst_HNOstFtB3YyYMOoNW4Fn1g

Thread query: Xcode build failed "Signing for Runner requires a development team" error when archiving Flutter app

TL;DR: Rebuild the chain from the portal outward so the certificate, the profile created from it, and the identity the builder signs with are one matched set, then re archive instead of re uploading the same binary. Start in the Flutter build log, the Xcode project the Flutter tooling generates, and the Podfile, work on one affected item, and prove the fix there before running the full set. The named signal in this one is Signing for Runner requires a development team. Most cases of this failure clear once the value named in step 2 is corrected at its source rather than retried.