brew stopped working on mac os (26.4.1) - Intel/Apple Silicon

[arunabhabanerjee]

Output of brew config

➜ brew config
==> Downloading https://ghcr.io/v2/homebrew/core/portable-ruby/blobs/sha256:f2bc4c3b081b09d7dcca97a8b8c5e102116e6ba68a5c118d6d961cf33b3162ec
curl: (56) Recv failure: Connection reset by peer

Error: Failed to download ruby from the following locations:
  - https://ghcr.io/v2/homebrew/core/portable-ruby/blobs/sha256:f2bc4c3b081b09d7dcca97a8b8c5e102116e6ba68a5c118d6d961cf33b3162ec

Do not file an issue on GitHub about this; you will need to figure out for
yourself what issue with your internet connection restricts your access to
GitHub (used for Homebrew updates and binary packages).
Error: Failed to upgrade Homebrew Portable Ruby!

Output of brew doctor

➜ brew doctor
==> Downloading https://ghcr.io/v2/homebrew/core/portable-ruby/blobs/sha256:f2bc4c3b081b09d7dcca97a8b8c5e102116e6ba68a5c118d6d961cf33b3162ec
curl: (56) Recv failure: Connection reset by peer

Error: Failed to download ruby from the following locations:
  - https://ghcr.io/v2/homebrew/core/portable-ruby/blobs/sha256:f2bc4c3b081b09d7dcca97a8b8c5e102116e6ba68a5c118d6d961cf33b3162ec

Do not file an issue on GitHub about this; you will need to figure out for
yourself what issue with your internet connection restricts your access to
GitHub (used for Homebrew updates and binary packages).
Error: Failed to upgrade Homebrew Portable Ruby!

Description of issue

Suddenly, Homebrew has stopped working on my Mac—both on Intel and Apple Silicon systems—even though the internet connection is working fine. Any help would be much appreciated.

[SMillerDev]

Might have something to do with https://www.githubstatus.com/incidents/ql942tw29yl6. If it occurs beyond that you'll have to figure out yourself why you can't connect to GitHub packages.

[mrunionemn]

This is happeneing today again and the URL that is used for the download (https://ghcr.io/v2/homebrew/core/portable-ruby/blobs/sha256:8ad98d9cf15477d1a43f4012cfd5eff5c271398bca1e2724b55bd4944a0bb1d4) returns this:

{"errors":[{"code":"UNAUTHORIZED","message":"authentication required"}]}

Not sure it is a "connection to GitHub package" problem on our end.

There is a CURL error before that Erro from libreSSL saying:

curl: (56) LibreSSL SSL_read: LibreSSL/3.3.6: error:06FFF064:digital envelope routines:CRYPTO_internal:bad decrypt, errno 0

Seems that this is not as straight forward as a connection to GitHub maybe? I'll try to dig deeper.

[mrunionemn]

Output from:

~ % curl -v https://ghcr.io/v2/homebrew/core/portable-ruby/blobs/sha256:8ad98d9cf15477d1a43f4012cfd5eff5c271398bca1e2724b55bd4944a0bb1d4

* Host ghcr.io:443 was resolved.
* IPv6: (none)
* IPv4: 140.82.112.34
*   Trying 140.82.112.34:443...
* Connected to ghcr.io (140.82.112.34) port 443
* ALPN: curl offers h2,http/1.1
* (304) (OUT), TLS handshake, Client hello (1):
*  CAfile: /etc/ssl/cert.pem
*  CApath: none
* (304) (IN), TLS handshake, Server hello (2):
* (304) (IN), TLS handshake, Unknown (8):
* (304) (IN), TLS handshake, Certificate (11):
* (304) (IN), TLS handshake, CERT verify (15):
* (304) (IN), TLS handshake, Finished (20):
* (304) (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / AEAD-CHACHA20-POLY1305-SHA256 / [blank] / UNDEF
* ALPN: server accepted h2
* Server certificate:
*  subject: CN=*.ghcr.io
*  start date: Apr 14 00:00:00 2026 GMT
*  expire date: Jul 12 23:59:59 2026 GMT
*  subjectAltName: host "ghcr.io" matched cert's "ghcr.io"
*  issuer: C=GB; O=Sectigo Limited; CN=Sectigo Public Server Authentication CA DV R36
*  SSL certificate verify ok.
* using HTTP/2
* [HTTP/2] [1] OPENED stream for https://ghcr.io/v2/homebrew/core/portable-ruby/blobs/sha256:8ad98d9cf15477d1a43f4012cfd5eff5c271398bca1e2724b55bd4944a0bb1d4
* [HTTP/2] [1] [:method: GET]
* [HTTP/2] [1] [:scheme: https]
* [HTTP/2] [1] [:authority: ghcr.io]
* [HTTP/2] [1] [:path: /v2/homebrew/core/portable-ruby/blobs/sha256:8ad98d9cf15477d1a43f4012cfd5eff5c271398bca1e2724b55bd4944a0bb1d4]
* [HTTP/2] [1] [user-agent: curl/8.7.1]
* [HTTP/2] [1] [accept: */*]
> GET /v2/homebrew/core/portable-ruby/blobs/sha256:8ad98d9cf15477d1a43f4012cfd5eff5c271398bca1e2724b55bd4944a0bb1d4 HTTP/2
> Host: ghcr.io
> User-Agent: curl/8.7.1
> Accept: */*
> 
* Request completely sent off
< HTTP/2 401 
< content-type: application/json
< www-authenticate: Bearer realm="https://ghcr.io/token",service="ghcr.io",scope="repository:homebrew/core/portable-ruby:pull"
< date: Wed, 29 Apr 2026 12:17:43 GMT
< content-length: 73
< x-github-request-id: C6FC:223850:42AA604:4AC96B3:69F1F6E7
< 
{"errors":[{"code":"UNAUTHORIZED","message":"authentication required"}]}
* Connection #0 to host ghcr.io left intact

I am going to try a different network connection and a different Mac just to see if that changes anything.....

[mrunionemn]

OK, different network and it worked.

Hmmm.......

Thanks for your patience.