Download and install or reinstall Office 365 or Office 2019 on a PC or Mac Office 2019 Office 2019 for Mac Office 2016 Office for business Office 365 Admin Office 365 for home Office 365 Small Business Office 365 Small Business Admin Office 365 for Mac Office.com More. Download and install or reinstall Office 365 or Office 2019 on a PC or Mac. Once the download has completed, open Finder, go to Downloads, and double-click Microsoft Office installer.pkg file. Launch an Office for Mac app and start the activation process. Download and install Microsoft OneDrive for Windows PC, Mac, iOS and Android. For information about how to manually remove and then reinstall Office, see the following article: Troubleshoot Office 2011 for Mac issues by completely uninstalling before you reinstall. Third-party disclaimer information. The third-party products that this article discusses are manufactured by companies that are independent of Microsoft.
Reinstall from macOS Recovery
macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu in the menu bar. This menu is also available in macOS Recovery.
1. Start up from macOS Recovery
To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following combinations on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.
Command (⌘)-R
Reinstall the latest macOS that was installed on your Mac (recommended).
Reinstall Mac Microsoft Office Free
Option-⌘-R
Microsoft Excel For Mac
Upgrade to the latest macOS that is compatible with your Mac.
Shift-Option-⌘-R
Reinstall the macOS that came with your Mac, or the closest version still available.
You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.
When you see the utilities window, you have started up from macOS Recovery.
2. Decide whether to erase (format) your disk
You probably don't need to erase, unless you're selling, trading in, or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.
3. Install macOS
When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to install.
- If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
- If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
- If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.
If your Mac restarts to a setup assistant, but you're selling it, trading it in, or giving it away, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.
macOS Recovery exceptions
The version of macOS offered by macOS Recovery might differ in certain circumstances:
- If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
- If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
- If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
- If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.
If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.
Other ways to install macOS
- You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
- Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.
Note
Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post.
Symptoms
When you try to start PowerPoint for Mac, you may receive the following error message:
Microsoft PowerPoint has encountered a problem and needs to close. We are sorry for the inconvenience.
Cause
This behavior may occur if any one of the following conditions is true:
- PowerPoint preferences are corrupted.
- Programs running in the background are interfering with PowerPoint.
- Application files are corrupted.
- A user account profile is corrupted.
Resolution
To resolve this issue, follow these steps. You may find it helpful to print this article before you continue.
Step 1: Quit all applications and close all windows
On the Apple menu, click Force Quit.
Select an application in the 'Force Quit Applications' window.
Click Force Quit.
Repeat the previous steps until you quit all active applications.
Warning
When an application is force quit, any unsaved changes to open documents are not saved.
When you are finished, click the red button in the upper-left corner of the screen, and then go to 'Step 2.'
Step 2: Remove PowerPoint Preferences
Quit all Microsoft Office for Mac applications.
On the Go menu, click Home.
Open Library.
Note
The Library folder is hidden in MAC OS X Lion. To display this folder, hold down the OPTION key while you click the Go menu.
Open the Preferences folder. Reinstall microsoft office 2016 mac.
Look for a file that is named com.microsoft.powerpoint.plist. If you locate the file, move it to the desktop. Start PowerPoint, and check whether the problem still occurs. If you cannot locate the file, the application is using the default preferences.
If the problem still occurs, quit PowerPoint, and restore the file to its original location. Then, go to the next step. If the problem seems to be resolved, you can move the com.microsoft.powerpoint.plist file to the trash.
Quit all Microsoft Office for Mac applications.
On the Go menu, click Home.
Office 365 for home subscription. If you have an Office 365 Home or Office 365 Personal subscription, you already have the most current version of Office at no additional cost and should already receive the latest features to your Office apps. See What’s new in Office 365 to learn more about the newest features. Update microsoft office subscription to newest for mac 2016. Excel for Office 365 for Mac Word for Office 365 for Mac Outlook for Office 365. If you're looking for previous release downloads for Microsoft AutoUpdate, see Update. Had a one-time purchase of Office on your Mac but now are an Office 365 subscriber and aren't seeing certain subscription features, your copy of Office may still be.
Open Library.
Note
The Library folder is hidden in MAC OS X Lion. To display this folder, hold down the OPTION key while you click the Go menu.
Open the Preferences folder.
Open the Microsoft folder.
Look for a file that is named com.microsoft.powerpoint.prefs.plist. If you locate the file, move it to the desktop. Start PowerPoint, and check whether the problem still occurs. If you do cannot locate the file, the application is using the default preferences.
If the problem still occurs, quit PowerPoint, and restore the file to its original location. Then, go to the next step. If the problem seems to be resolved, you can move the com.microsoft.powerpoint.prefs.plist file to the trash.
If the problem continues to occur, go to the next step.
Step 3: Perform a clean startup
For information how to 'clean start' your computer, click the following article number to view the article in the Microsoft Knowledge Base:
2398596 How to use a 'clean startup' to determine whether background programs are interfering with Office for Mac
If the problem continues to occur, go to the next step.
Step 4: Create a new user account
Sometimes, a specific user's information may become corrupted, and this may prevent installation, startup, or use of some applications. To determine whether this is the case, you can log on to the computer by using a different or new user account, and then test the application.
If the problem no longer occurs, the cause exists within the user's home folder. If you think that the user account was responsible, you can continue to troubleshoot by using the new user account.
Note
For help moving your user files to the new account, contact Apple.
If the problem continues to occur, go to the next step.
Step 5: Use the 'Repair Disk Permissions' option
You can use the Repair Disk Permissions option to troubleshoot permissions problems in Mac OS X 10.2 and later versions. If the permissions for your Microsoft software are incorrect, Office for Mac applications may start slowly or perform slowly. To use the Repair Disk Permissions option, follow these steps:
- On the Go menu, click Utilities.
- Start the Disk Utility program.
- Click the primary hard disk drive for your computer.
- Click the First Aid tab.
- Click Repair Disk Permissions.
Note
The Disk Utility program only repairs software that is installed by Apple. This utility also repairs folders, such as the Applications folder. However, this utility does not repair software that is in your home folder.
Step 6: Remove and then reinstall Office
For information about how to manually remove and then reinstall Office, see the following article:
Third-party disclaimer information
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
The information and the solution in this document represent the current view of Microsoft Corporation on these issues as of the date of publication. This solution is available through Microsoft or through a third-party provider. Microsoft does not specifically recommend any third-party provider or third-party solution that this article might describe. There might also be other third-party providers or third-party solutions that this article does not describe. Because Microsoft must respond to changing market conditions, this information should not be interpreted to be a commitment by Microsoft. Microsoft cannot guarantee or endorse the accuracy of any information or of any solution that is presented by Microsoft or by any mentioned third-party provider.