Product: macOS, Notarization Tool: notarytool, Stapler Tool: xcrun stapler, Application: master-billing.app, DMG: master-billing.dmg I'm attempting to notarize and staple a macOS .dmg file containing a signed .app. Notarization completes successfully, but the stapling step fails with Error 65. All tools are up-to-date and I'm following the official Apple process. #!/bin/bash set -e APP="dist/mac-arm64/master-billing.app" DMG="dist/mac-arm64/master-billing.dmg" IDENTITY="Developer ID Application: NAME (TEAM ID)" PROFILE="notarysiva" VOLUME_NAME="MasterBilling" Sign binaries and frameworks find "$APP" -type f ( -name ".dylib" -or -name ".so" -or -name "*.node" -or -perm -u+x ) -exec codesign --force --options runtime --timestamp --sign "$IDENTITY" {} ; find "$APP" -type d ( -name ".app" -or -name ".framework" ) -exec codesign --force --options runtime --timestamp --sign "$IDENTITY" {} ; codesign --deep --force --options runtime --timestamp --sign "$IDENTITY" "$APP" Create DMG hdiutil create -volname "$VOLUME_NAME" -srcfolder "$APP" -ov -format UDZO "$DMG" Sign DMG codesign --sign "$IDENTITY" --timestamp "$DMG" Verify DMG signature codesign --verify --verbose=2 "$DMG" Submit for notarization xcrun notarytool submit "$DMG" --keychain-profile "$PROFILE" --wait Staple ticket xcrun stapler staple -v "$DMG" Signing all binaries, dylibs, and frameworks... . . ✅ App signing complete. 💽 Creating DMG... ...................................................................................... created: /Users/one/Documents/MASTER/bill-master/dist/mac-arm64/master-billing.dmg 🔏 Signing the DMG... ✅ Verifying DMG signature... dist/mac-arm64/master-billing.dmg: valid on disk dist/mac-arm64/master-billing.dmg: satisfies its Designated Requirement 📤 Submitting DMG for notarization... Conducting pre-submission checks for master-billing.dmg and initiating connection to the Apple notary service... Submission ID received id: 32927c3c-7459-42b4-a90c Upload progress: 100.00% (123 MB of 123 MB) Successfully uploaded file id: 32927c3c-7459-42b4-a90c path: /Users/one/Documents/MASTER/bill-master/dist/mac-arm64/master-billing.dmg Waiting for processing to complete. Current status: Accepted............ Processing complete id: 32927c3c-7459-42b4-a90c status: Accepted 📌 Stapling notarization ticket to DMG... Processing: /Users/one/Documents/MASTER/bill-master/dist/mac-arm64/master-billing.dmg . . . Downloaded ticket has been stored at file:///var/folders/1l/ht34h5y11mv3rhv8dlxy_g4c0000gp/T/5bb9e667-dfe1-4390-8354-56ced7f48fa0.ticket. Could not validate ticket for /Users/one/Documents/MASTER/bill-master/dist/mac-arm64/master-billing.dmg The staple and validate action failed! Error 65.