Dear Apple Developer Technical Support, I am encountering an issue with notarizing and stapling both PKG and DMG installers for our Electron-based macOS application COSGrid. Despite receiving successful notarization submission responses via notarytool, the stapling process fails with Error 65. Environment: App Name: COSGrid Bundle Identifier: com.cosgrid.pkg.COSGrid Developer ID Team ID: YB8S2XZ98K macOS Version: macOS [15.1] Xcode Version: [16.0 (16A242d)] Workflow Summary: For PKG: Build via yarn build (Vite + Electron Builder) Package with pkgbuild Sign using productsign Submit for notarization: xcrun notarytool submit COSGridMZA-2.1.10-arm64.pkg --apple-id "..." --team-id YB8S2XZ98K --password "..." --wait Conducting pre-submission checks for COSGridMZA-2.1.10-arm64.pkg and initiating connection to the Apple notary service... Submission ID received id: a8ff8e09-1ab4-49ed-9f6b-4afb9f09e53a Upload progress: 100.00% (235 MB of 235 MB) Successfully uploaded file id: a8ff8e09-1ab4-49ed-9f6b-4afb9f09e53a path: /Users/murugavel/Documents/MZA/mza/release/2.1.10/COSGridMZA-2.1.10-arm64.pkg Waiting for processing to complete. Current status: Accepted..................... Processing complete id: a8ff8e09-1ab4-49ed-9f6b-4afb9f09e53a status: Accepted Receive notarization success Stapling fails: xcrun stapler staple COSGridMZA-2.1.10-arm64.pkg Could not validate ticket... The staple and validate action failed! Error 65. For DMG: Sign via codesign Submit to notarization — success Attempt to staple: xcrun stapler staple -v COSGrid-2.1.10-arm64.dmg Could not validate ticket... The staple and validate action failed! Error 65. Additional Verification: I verified the DMG’s code signature integrity: Command: codesign --verify --verbose=4 COSGrid-2.1.10-arm64.dmg Output: COSGrid-2.1.10-arm64.dmg: valid on disk COSGrid-2.1.10-arm64.dmg: satisfies its Designated Requirement Command: codesign -dvv COSGrid-2.1.10-arm64.dmg Output: Executable=/Users/murugavel/Documents/MZA/mza/release/2.1.10/COSGrid-2.1.10-arm64.dmg Identifier=COSGrid-2.1.10-arm64 Format=disk image CodeDirectory v=20200 size=308 flags=0x0(none) hashes=1+6 location=embedded Signature size=9013 Authority=Developer ID Application: COSGrid Systems Private Limited (YB8S2XZ98K) Authority=Developer ID Certification Authority Authority=Apple Root CA Timestamp=1 Jul 2025 at 11:34:05 AM Info.plist=not bound TeamIdentifier=YB8S2XZ98K Sealed Resources=none Internal requirements count=1 size=180 **Verified Signature for .pkg ** pkgutil --check-signature COSGridMZA-2.1.10-arm64.pkg Package "COSGridMZA-2.1.10-arm64.pkg": Status: signed by a developer certificate issued by Apple for distribution Signed with a trusted timestamp on: 2025-06-30 13:57:19 +0000 Certificate Chain: 1. Developer ID Installer: COSGrid Systems Private Limited (teamID) Expires: 2027-02-01 22:12:15 +0000 2. Developer ID Certification Authority Expires: 2027-02-01 22:12:15 +0000 3. Apple Root CA Expires: 2035-02-09 21:40:36 +0000 Diagnostic Logs Attached: Stapler verbose logs for both PKG and DMG codesign verification output for both PKG and DMG Notarytool submission logs Ticket JSON response from Apple API API request/response headers Effective electron-builder.yaml config Key Observations: codesign verification passes successfully for both artifacts Notarization submission reports success via notarytool Stapler fails with Error 65 for both PKG and DMG Ticket JSON fetched from CloudKit API appears valid No provisioning profile used (Developer ID distribution only) Request: Could you please help investigate: Why is the stapler unable to validate or attach the ticket even though notarization completes successfully? Are there any known issues, entitlements, or workflow adjustments recommended in this case? Is any special handling required for Electron apps’ PKG/DMG packages or Hardened Runtime configurations during stapling? I can provide the signed DMG/PKG and full notarization logs upon request. Thank you very much for your assistance — looking forward to your guidance. Best regards, Murugavel COSGrid Systems Private Limited

We have written a PAC script that blocklists certain domains and whitelists others. We went to Settings > Network > Wi-Fi (the network we are using), then clicked on Details, and under Proxies, we added the PAC file URL in the Automatic Proxy Configuration section. We tried hosting the PAC file both on localhost and on a separate HTTP server. After saving the settings, we tested several URLs. The blocking and allowing behavior works correctly in all browsers except Safari. Below is the PAC script we are using for your reference. The script works as expected in browsers other than Safari. This is how the PAC script URL looks: http://localhost:31290/proxy.pac function FindProxyForURL(url, host) { var blacklist = new Set(["facebook.com", "deepseek.com"]); var b_list = [...blacklist]; for (let i = 0; i < b_list.length; i++) { let ele = b_list[i] + "*"; if (shExpMatch(host, ele) || shExpMatch(url, ele)) { return "PROXY localhost:8086"; } } if (isIPBlocked(whitelist_subnet, hostIP)) { return "PROXY localhost:8087"; } if (isIPBlocked(blacklist_subnet, hostIP)) { return "PROXY localhost:8086"; } return "PROXY localhost:8080"; }