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06 Numbers and Powers

Skype Versions Supported on OS X

Card No. 06·49067 · Updated · Standard formula, shown below

Skype for Mac supports macOS 10.13 High Sierra and newer, with the latest versions requiring macOS 10.15 Catalina or later. Older OS X releases (10.12 and earlier) no longer receive Skype updates, and the app may fail to sign in or crash. This guide explains which Skype build works on your Mac, how to check your OS version, and what to do if your system is too old.

Current macOS Compatibility

Microsoft’s Skype for Mac is a 64-bit application. As of 2024, the minimum system requirement is macOS 10.13 High Sierra, but the most recent builds (Skype 8.x) officially support macOS 10.15 Catalina and later. If you’re running an older macOS, you can still install an earlier Skype 8.x version, but it will eventually stop working because Microsoft disables older builds after a few months.

How to Check Your macOS Version

  1. Click the Apple menu (top-left) and select About This Mac.
  2. Look for the line that says macOS (or OS X) followed by a version number like 10.15.7 or 12.6.
  3. If you see a version older than 10.13, you cannot run the latest Skype.

Knowing your exact version helps you pick the right installer. For example, macOS 10.14 Mojave users can run Skype 8.65 or earlier, but not the newest releases.

Why Older macOS Versions Fail

Skype relies on modern system frameworks (like WebKit and Metal) that Apple only provides in newer OS releases. When Microsoft updates Skype, it drops support for older macOS versions to reduce development costs and security risks. Additionally, since macOS Catalina (10.15), Apple requires all apps to be notarized, and older Skype builds are not signed for those systems.

How to Get the Right Skype Version

  • If your Mac runs macOS 10.15 or later: Download the latest Skype from the official Skype website or the Mac App Store.
  • If your Mac runs macOS 10.13 or 10.14: You need an older Skype 8.x build. You can find these on third-party software archives (like OldVersion.com) or by checking Microsoft’s official download page for legacy links.
  • If your Mac runs macOS 10.12 or earlier: The last compatible Skype version is 8.20 (released in 2018). It may still work for basic calling, but it will not support modern features and may have security vulnerabilities.

Common Problems and Fixes

Skype says “This version is no longer supported” – This message appears when your Skype build is too old. You need to update to a newer version that matches your macOS. If you can’t update, consider using Skype for Web in a browser.

Skype crashes on launch – This often happens if you installed a newer Skype than your OS supports. Uninstall Skype, download the correct version for your macOS, and reinstall.

Can’t sign in – Microsoft may have blocked older Skype versions for security reasons. Check your Skype version and update if possible. Also ensure your system date and time are correct, as expired certificates can prevent sign-in.

Alternatives for Very Old Macs

If your Mac is stuck on OS X 10.11 El Capitan or older, Skype is effectively unusable. Consider these alternatives:

  • Skype for Web – Works in Safari or Chrome on any macOS version that supports a modern browser.
  • FaceTime – Built into macOS, works for video calls between Apple devices.
  • Zoom or Google Meet – Both have web-based clients that run in a browser without installation.

Frequently Asked Questions

Can I install Skype on macOS 10.12 Sierra? Yes, but only Skype 8.20 or earlier. These versions are outdated and may not connect to Microsoft’s servers reliably.

Will Skype stop working on my Mac if I don’t update? Eventually, yes. Microsoft periodically disables older Skype versions, forcing you to update. When that happens, you’ll see an error message and won’t be able to sign in.

How do I find my Skype version? Open Skype, click your profile picture, then select Help > About. The version number appears in the window.

Is Skype for Mac free? Yes, Skype is free to download and use for person-to-person calls. You only pay for calling landlines or mobile numbers via Skype Credit or a subscription.

Does Skype work on Apple Silicon (M1/M2) Macs? Yes, Skype runs natively on Apple Silicon. If you have an older Intel-based Mac, it also works fine as long as your macOS is supported.

What if I have a PowerPC Mac? Skype for Mac stopped supporting PowerPC with version 5.5 (released in 2009). You cannot install any modern Skype on a PowerPC Mac.

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