Why does it say my macOS Sierra is damaged?
The cause of this error is an expired certificate, and because the certificate is expired, the “Install macOS” app for Mojave, Sierra, and High Sierra will not run. Fortunately, there is a fairly simple solution to the “damaged” installer problem. Below are the download links for the recent versions of macOS.
How do I fix app error on Mac?
How to Fix an Application Not Opening on Mac
- Restart the Mac. …
- Update the app. …
- Delete the app preference file (plist file) manually or with an app uninstaller for Mac. …
- Start your Mac in Safe Mode. …
- Repair app permissions. …
- Reinstall the app. …
- Contact the app developer.
How do I open a corrupted file on a Mac?
Mac’s Built-In Repair Shop
Open up your Applications folder, and click “Utilities.” Open up the Disk Utility application in that list to have access to the repair tool. Now simply drag your damaged DMG file onto the Disk Utility window. Click the damaged file, and then select “Repair Disk” in the First Aid tab.
What do I do if my Mac Mojave is damaged?
2 Answers
- Go to your applications folder.
- Find the installer for macOS Mojave.
- Right click on the installer and click “Show Package Contents”.
- Click on folder named “Contents”.
- Click on the folder named “SharedSupport”.
- Delete the file named “InstallInfo. …
- Enter your administer password to confirm.
How do I fix my High Sierra Mac?
Additional Steps to Fix macOS High Sierra Needs To Repair Your Library
- Go to the Apple icon in the top left corner of your screen and choose Restart from the menu.
- Hold both Command and R keys to enter Recovery Mode. …
- Select Reinstall macOS.
- Choose your hard drive, usually MacintoshHD (or whatever you named your drive)
Why do I not have permission to access file Mac?
If you don’t have permission to open a file or folder, you may be able to change the permissions settings. On your Mac, select the item, then choose File > Get Info, or press Command-I. Click the arrow next to Sharing & Permissions to expand the section.
Why is my Mac not responding?
If your system is not responding, or you can’t open any of the Force Quit menus, you can force the computer to reboot. … Press ⌘ Command + Ctrl + ⏏ Eject to force the computer to reboot. The ⏏ Eject key can be found in the upper-right corner of the keyboard. Newer MacBooks may not have an ⏏ Eject key.
How do you unfreeze an application on a Mac?
Here’s how:
- On your Mac’s keyboard, hit the Option, Command and Escape keys simultaneously (Alt + Command + Esc).
- The Force Quit dialog box appears with a list of running programs.
- Select the frozen app and then click Force Quit.
- The software will stop running and you’re free to re-launch it at this point.
How do I fix a corrupt file on my Macbook Pro?
First Things You Should Do When Mac Hard Disk Corruption Happens
- Step 1: Scan Your Hard Disk for Errors. …
- Step 2: See If You Have a Backup. …
- Step 3: Use DiskUtil to Repair the Hard Disk. …
- Step 4: Fix File System Consistency with FSCK. …
- Step 5: Recovery Your Files with Disk Drill.
How can I open a corrupted file?
The Open and Repair command might be able to recover your file.
- Click File > Open > Browse and then go to the location or folder where the document (Word), workbook (Excel), or presentation (PowerPoint) is stored. …
- Click the file you want, and then click the arrow next to Open, and click Open and Repair.
Why are all my documents damaged?
If your computer loses power or crashes as you save a file, there’s a good possibility that the file will become corrupted. Bad sectors on your hard drive or other storage media can also cause file corruption, even if the saving process finishes properly. Viruses and other malware can also cause file corruption.
Why can’t I download Mac Mojave?
If you’re still having problems downloading macOS Mojave, try to find the partially-downloaded macOS 10.14 files and a file named ‘Install macOS 10.14’ on your hard drive. Delete them, then reboot your Mac and try to download macOS Mojave again. … You may be able to restart the download from there.
How do I re-download OSX Mojave?
How to Re-download the MacOS Mojave Installer Application
- From MacOS Mojave, open the Mac App Store and search for “MacOS Mojave” (or click this direct link to Mojave)
- Click the “Get” button to start re-downloading MacOS Mojave.