App doesn't open in macOS 26 Beta 8+

[Batu-U]

When the app is opened, a malware error is given and the app is unable to open. (Already tried to disable gatekeeper).

[HGExplodey]

Have you tried overriding the malware protection? If not, right click the app then press get info and tick override malware protection. This worked for me

[sshahzaiib]

I'm having the same issue. Whenever I try to open the app, it just says malware and deletes the app from Applications

[sx328]

same here as well.

quarantining doesnt work either, nor does enabling "Anywhere"

seems like the only way might be disabling SIP

[PatrikTheDev]

To open the Tahoe build, you need to do a few steps:

• Strip the quarantine flags: xattr -c /Applications/WinDiskWriter.app
• Get your signing identity (you need a developer account): security find-identity -p codesigning -v
• Sign the binary: codesign --sign "Apple Development: Your Name (your team id)" //Applications/WinDiskWriter.app/Contents/MacOS/WinDiskWriter --force

[sshahzaiib]

@sx328 Both or these options are not working for me as well.
I've been thinking of getting a Apple Developer account lately however I'll be just wasting it as I'm doing with my Google Play account. Not worth 99$ a year for now 😄

[PatrikTheDev]

A free Apple Developer account is sufficient for codesigning locally, the signature just expires in 7 days

[sshahzaiib]

A quick chat with Gemini revealed that no Developer Account is needed. I tried and it actually worked.

Prerequisites:

• Xcode Command Line Tools

Steps for Ad-Hoc Signing:

• Sign the executable:
  Use the codesign command with the --sign - flag. The dash (-) is the key here; it tells codesign to use a self-generated, ad-hoc signature instead of a formal certificate.

  codesign --force --sign - /Applications/WinDiskWriter.app

• Verify the signature:
  You can check if the signing was successful by running the following command. The output should confirm that the app has an "ad-hoc" signature.

  codesign --verify --verbose /Applications/WinDiskWriter.app

[sshahzaiib]

Just noticed its a duplicate of #46

[TechUnRestricted]

Hello everyone.

I've uploaded a new WinDiskWriter build for Tahoe to fix the false positive malware detection by Apple. This replaces my previous build with build kindly provided by @Android-Artisan.

Please download the updated file and let me know if the issue is resolved.

Download: WinDiskWriter.v1.3_Tahoe_26.0+.zip

Thank you.

[RealtekDotSys]

i was previously crashing when trying to flash, this fixed it. thanks

[pqt-dev]

@TechUnRestricted This version not working on Tahoe.

[jonasbjork]

I just downloaded version 1.3 on macOS 26.0 (M4) from https://github.com/TechUnRestricted/WinDiskWriter/releases/download/v1.3/WinDiskWriter.v1.3_Tahoe_26.0+.zip and it works. I get the same dialog as @pqt-dev above, but I opened System Settings and then "Integrity and Security" (translated from Swedish, so might be something else in English). There I had to accept the risk, scroll down to the bottom of the list (Security) and allow it there.

[tankshield]

Doesn't work on 26.0.1. I have tried v1.3_Tahoe_26.0 on Intel Mac. I get the same message as @pqt-dev and there is no entry in the settings>security to allow this app.

[timmyofficial]

Doesn't work on 26.0.1. I have tried v1.3_Tahoe_26.0 on Intel Mac. I get the same message as @pqt-dev and there is no entry in the settings>security to allow this app.

same here

[TechUnRestricted]

Hello @tankshield @pqt-dev @timmyofficial!

Apologies for the significant delay in responding. I was unexpectedly in the hospital and was unable to address this sooner. Thank you for your patience.

A new Intel build is now provided which will fix the issue you encountered with the Apple Silicon-only build.

⚠️ For macOS Tahoe 26.0+ users only

Please download an updated release:

• [Apple Silicon] WinDiskWriter 1.3
• [Intel] WinDiskWriter 1.3