I'm experiencing an issue when trying to install an app, such as Microsoft Teams, on my iMac (Big Sur). It's giving me a message that the app can't be installed on Macintosh HD because macOS version 12 or later is required. Even though my Mac is up to date, there is no version 12 available yet; the latest version is 11.7.10
[Re-Titled by Moderator]
Original Title: Installing issue
iMac 27″, macOS 11.7
Which 27" iMac do you have? You would need one with a hardware model year of
If your 27" iMac has a model year of Late 2014 or Mid 2015, Big Sur is as far as it can go.
If you can upgrade, see the App Store links in How to download and install macOS - Apple Support .
Note that Microsoft has a policy of supporting only the three most recent versions of macOS. That means that you may need a Mac running Sonoma, Sequoia, or Tahoe to use the desktop Teams app. If your Mac is too old to clear that hurtle, you may want to try using Firefox and the Teams client for the Web. (The current version of Firefox will run even on Catalina.)
Which 27" iMac do you have? You would need one with a hardware model year of
If your 27" iMac has a model year of Late 2014 or Mid 2015, Big Sur is as far as it can go.
If you can upgrade, see the App Store links in How to download and install macOS - Apple Support .
Note that Microsoft has a policy of supporting only the three most recent versions of macOS. That means that you may need a Mac running Sonoma, Sequoia, or Tahoe to use the desktop Teams app. If your Mac is too old to clear that hurtle, you may want to try using Firefox and the Teams client for the Web. (The current version of Firefox will run even on Catalina.)
If you have a subscription to M365, then you can use the web version of Teams through a web browser.....also allows you to use the browser to access the MS Office apps as well.
they set the os version requirements because apps would crash if run on the older operating systems.
Unable to install apps on iMac (Big Sur) due to macOS version requirement
