Open your folder and double-click Google Chrome.

When you double-click the .dmg file, macOS Gatekeeper automatically checks the digital signature of the installer. If the file is from Google and hasn't been tampered with, it will open normally. If macOS reports "Google Chrome can't be opened because it is from an unidentified developer" (or shows a damaged file error), the download is either corrupted or altered. Delete the file immediately and re-download from the official URL.

Always verify the SHA-256 checksum, check the digital signature, and ensure the file is notarized by Apple before moving it to your Applications folder. With this guide, you can now confidently download and install a verified, safe copy of Chrome for Mac—build 10157 or equivalent.

Google officially ended support for macOS 10.15 Catalina in late 2023.

To download Google Chrome macOS Catalina 10.15.7 , the verified last compatible version is Chrome 128 Google Help Current versions of Chrome now require macOS 11 (Big Sur)

Verifying the authenticity of your downloaded version involves checking its digital signature. Here’s how: