![]() ![]() However you can still do that using the Terminal app. This was easy but newer version of macOS do not have the option of changing this easily by going to System Preferences > Security & Privacy and selecting the Anywhere option. And further, on your Mac, go to System Preferences > Software Update and check to see if there is an update available.ģ-You may want to temporarily disable Gatekeeper. Sometimes installing some trusted apps may be prevented. For instance, do not download the Google Chrome app from any other source than Google itself.Ģ-It is known that sometimes macOS gives this error mistakenly. As stated above, do now download from any other source. Also, please make sure that you download directly from the developers website. It is possible that the app might be damaged during the downloading process. ![]() If you still think, the app will not hurt your Mac upon installing, please read how you can install it below: Howġ-You may want to re-download the app. However make sure that you are downloading the app directly from the developer website only. You may think that the app is developed by a trusted source. It is also mean that the app you want to install is from an identified developer. If you run into this issue meaning if you see the “damaged” label, it is highly likely that the app you are trying to download has been altered by something other than the developer. See also: How Do I Password Protect My Files & Folders In macOS? This is to prevent you from installing “malware” – malicious software on your Mac. Your macOS system includes a security feature, called Gatekeeper, that can block the installation of applications downloaded from sources other than the Mac App Store or from a list of “identified developers”. See also: Mac App Store: An Error Occurred During Purchase Why? If you see this warning message and can’t install an app, here is why and how to fix it: ” error and 9 solutions to fix it.Īre you experiencing this issue also? Please note that attempting to open some files may also produce this error message. Hope this helps.This article introduces common causes for the “ App is damaged and can’t be opened. Repeated the Command + Open technique for the TechTool Pro Installer, but this time it did not work - got the same "file is damaged" message. Repeated the process for the TechTool Pro installer - an Installer Package file - copying it to the iCloud Drive folder. The installer application ran successfully in Catalina. Back on the iMac, running Catalina, I used Command + Open to open the installer Application for Back Blaze, then answered the system security questions that yes, in fact, I did want to open that application. Once the installer disk image was mounted on my desktop, I copied the installer App from that disk image and pasted it into a new folder in my iCloud Drive (in use on both the MBPro and on the iMac running Catalina). To test if this was true, I returned to my MacBook Pro running macOS 10.14 Mojave, downloaded the BackBlaze installer dmg file and successfully opened it on that system. dmg files and when I tried to open them, got the now infamous error message: "filename.dmg" is damaged and can't be opened. I recently updated my 2013 27" iMac to macOS 10.15.2 Catalina, and found that I needed to update applications such as BackBlaze and TechTool Pro on my system. ![]()
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