Hi Phil,

I understand you’re having trouble with PharoLauncher on your M3 MacBook Air, 
hanging when trying to connect to files.pharo.org. Here are several steps that 
usually help resolve this issue:

1. Check your network connection
Open Terminal and run:
curl -I https://files.pharo.org

    • If it returns HTTP/2 200, the connection is fine.
    • If it fails, try switching Wi-Fi networks or disconnecting from VPN.
    • Also check that you can open https://files.pharo.org in your browser.

2. Clear PharoLauncher cache
Old settings or caches can cause the launcher to hang:
mv ~/Library/Application\ Support/PharoLauncher ~/Library/Application\ 
Support/PharoLauncher.bak

Then restart PharoLauncher. It will create fresh settings.

3. Manually download a Pharo image
    • Go to https://files.pharo.org and download the image you need (e.g., 
Pharo 10 latest stable).
    • Unzip the .zip file, which will contain a .image and .changes file.
    • In PharoLauncher, use Add Local Image to select the .image file and start 
it.

4. Check macOS security & firewall
    • Go to System Settings → Network → Firewall.
    • Make sure PharoLauncher is allowed to connect.
    • If using Intel (x86) binaries on Apple Silicon, consider using the native 
ARM64 version.

5. Apple Silicon specific note
    • Make sure you downloaded the ARM64 version of PharoLauncher for your M3 
Mac.
    • You can test by launching from Terminal:
arch -arm64 /Applications/PharoLauncher.app/Contents/MacOS/PharoLauncher

6. Debugging
Launch PharoLauncher from Terminal to see logs and connection errors:
/Applications/PharoLauncher.app/Contents/MacOS/PharoLauncher

If network issues persist, manually downloading the image and using the local 
image option is a reliable workaround.
I hope this helps! Let me know if you run into any further issues.

Best regards,
Masaya


> On Oct 15, 2025, at 21:49, Phil Gray via Pharo-users 
> <[email protected]> wrote:
> 
> Hi
> 
> I’m having trouble reinstalling PharoLauncher on an M3 MacBook Air running 
> Sequoia 15.6.1.
> 
> I uninstalled a working version of PharoLauncher (long story) and then 
> downloaded and installed a new version. On launch, a Pharo window opens and 
> then it hangs trying to connect to ‘files.pharo.org’.
> 
> I’d be grateful for any help.
> 
> Phil

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