Dear RushFiles Users,

If the issue you're having is not in these lists, you may also be experiencing an emerging issue. See the Mac section in Fixes or workarounds for recent Office installation or activation issues for help and updates on these recent issues. Troubleshoot install or activation errors for Office for Mac. Mac App Store and identified developers: When you try to open a new app and it’s not on the list of identified developers that’s saved within the operating system, the Mac tells you it can’t. This wikiHow teaches you how to install software that isn't approved by Apple on your Mac. MacOS Sierra marks most unofficial apps as unsigned software, so you'll need to perform this process to install many third-party apps or programs. You can do this once per install, or you can disable this security feature altogether.

Can Not Install App In Macbook

Some of our users reported that they receive a message saying 'Installer.pkg can't be opened because Apple cannot check it for malicious software.' There's only an OK button with this message, and the client seemingly can't be installed.

If you encounter this, please go to System Preferences -> Security & Privacy -> General. Here, make sure that 'Allow apps downloaded from' is set to 'App Store and identified developers'. You might need to click the little lock icon and type in your Mac's password to make changes on this page.

Install Mac Apps On Windows

After you've set this setting, you will be able to install the client.