Microsoft Outlook Won T Open


Outlook 2019, Outlook 2016, Outlook for Office 365; In this article. Original KB number: 3106898. In Microsoft Outlook 2016, Outlook 2019, and Outlook for Office 365, when you double-click an attachment to open it, the file does not open. However, you can right-click the attachment and then select Open to open it. If Microsoft Outlook isn't responding or opening, you can access it by executing a few simple steps. A lagging or inaccessible Outlook is a typical problem for most users. Usually the inaccessibility of Outlook stems from a corrupt or damaged application file; certain files prevent Outlook from opening. May 08, 2019 Outlook won’t start – what now? Outlook is a useful e-mail program with which you can avoid logging into the website of your provider to check your inbox. Nevertheless, even this popular element of Microsoft Office sometimes falls short – especially when you cannot open the Outlook window at all.

  1. Microsoft Outlook Won't Open On Mac
  2. Microsoft Outlook Won't Open On Mac
  3. What To Do When Microsoft Outlook Won't Open

Summary :

This article published by MiniTool brand offers you 19 solutions to fix Microsoft Office won't open problem. It is mainly based on the Windows 10 operating system, but most methods also apply to Windows 7 and Windows 8. Those ways are popular online and have helped thousands of users.

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“Microsoft Office won't open” refers to the Microsoft Office apps won't open. It can be one, several, or all of the Office programs that don’t open. For example, it can be Microsoft Excel won’t open, Microsoft Word won’t open, Microsoft Outlook won’t open, and so on.

Tip: A complete set of Microsoft Office programs includes Word, Excel, PowerPoint, Outlook, OneDrive, OneNote, To Do, Family Safety, Calendar, Access, Publisher, Visio, Project, Skype, Groove, etc.

Microsoft Office Won't Open Cases

There are a lot of users online complaining about Microsoft office will not open issues. The following are some of the typical ones among all kinds of situations.

Case 1. Microsoft Office Cannot Open After Update

“I just had an automatic update of my computer's Windows but now I can't get any of my Microsoft Office apps to open.”

Case 2. Microsoft Office Doesn’t Open in the Correct Program

Sometimes, you may encounter such a situation: the Microsoft Office file does not open in the expected program. What does this mean? For example, a Word file can’t be opened with Microsoft Word 2019, instead, it may open in another application or an older version of Word.

Case 3. Microsoft Office Does Not Open with a File Association Error

“This file does not have a program associated with it for performing this action. Please install a program or if one is already installed and create an association in the default programs control panel.'

Or “This action is only valid for products that are currently installed”.

Have you got the error “this file does not have a program associated with it for performing this action” in Windows 10? Get the solutions from this post.

Case 4. Microsoft Office Has Stopped Working

“Microsoft Word has stopped working.” Many of you have ever encountered such an error. When it appears, it also states that Windows can check online for a solution to the problem. So, you can choose “Check online for a solution and close the program” or just “Close the program”.

Besides the various cases, the situations of the Office opening problem are also different. Some may be no response after double-clicking, some may be stuck at the processing screen, some may be open with a blank screen, and so on.

How to Fix Microsoft Office Won't Open Issues?

  1. Open Files from Microsoft Office Programs
  2. Check Task Manager
  3. Recreate Shorts for Microsoft Office Apps
  4. Make Sure Microsoft Office Is Activated
  5. Keep Microsoft Office Up-to-date
  6. Stop ClickToRunSvc Service
  7. Repair Microsoft Office
  8. Uninstall Unused Microsoft Office Versions
  9. Reinstall Microsoft Office
  10. Troubleshoot Microsoft Office File Association
  11. Manually Associate Files to the Correct Office Program
  12. Open Microsoft Office in Safe Mode
  13. Disable Microsoft Office Add-ins
  14. Update Windows
  15. Uninstall Windows Update
  16. Repair Corrupted File System
  17. Remove Old Printer Drivers
  18. Scan Virus on Your Computer
  19. Post in Microsoft Office Community

How to Fix Microsoft Office Won't Open Issues?

For the different cases mentioned in the above content, there are different causes, and there are different fixes. Yet, if you do not know the cause of your situation or why won’t Microsoft Office open, if you don’t want to spend time to figure out the reason, or if you can’t figure out the cause of your problem, you can just try the following solutions one by one until you fix your problem.

Solution 1. Open Files from Microsoft Office Programs

Sometimes, if you cannot open a Microsoft Office file by directly double-clicking on it, you can try to firstly open the corresponding Office program, then open the target file from the app.

Step 1. Launch the correct Microsoft Office app, Word, Excel, or PowerPoint.

Step 2. On its top menu, select File > Open.

Step 3. Find and select your target file.

If you can successfully open the target file, congratulations! If, unfortunately, you cannot, just go to the next solution.

Solution 2. Check Task Manager

For Microsoft Office won’t open on Windows 10 problem, the symptom usually is that after you double-click a file and nothing opened. Or, after right-clicking on an Office file and select Open, there is no response.

Does the file really not open? To confirm it, just go to Task Manager to check out in the Process tab. If, for example, the word program is running there, then, Windows system thinks the file is already opened. Yet, you still can’t see the file.

What to do? Just right-click on the target file and choose Edit or Open. It may open the file for you.

Want to end some tasks in Task Manager? How to open Task Manager for this work? In this post, you can know multiple ways to bring up Task Manager.

Solution 3. Recreate Shorts for Microsoft Office Apps

If you can’t open any Microsoft Office programs through their shortcuts, you can directly open the actual executable files. To do that, first of all, you need to find where the Office executive files are. Depending on the different versions of Microsoft Office, you can find them in one of the below two locations.

  • C:Program Files (x86)Microsoft OfficeOffice12
  • C:Program FilesMicrosoft OfficeOffice12

Once you find the executable files of Office programs, double-click to open them. If you succeed, then, it is the shortcuts that should be blamed. So, recreate the shortcuts will fix the problem. Just right-click on the executable file and select Create shortcut.

Solution 4. Make Sure Microsoft Office Is Activated

As for Microsoft Office won't start, chances may be that your Microsoft Office suite is not genuine. If that is true, you won’t be able to use any Microsoft Office programs. You can open them with blank, but you can do nothing with them like create contents and edit existing files. So, just use a genuine version of Office.

If you do install Microsoft Office from a formal and legal website, you may also encounter open failure for you haven’t activated it. In such a case, just activate your Microsoft Office with your license.

How to check whether the Office is activated or not? Just open any office program, go to File > Account, and you can see the details under Product Information.

Solution 5. Keep Microsoft Office Up-to-date

Sometimes, Office programs can’t work properly for they are out-of-date. So, just install the latest update of Microsoft Office will fix the problem. You can simply do it by clicking the Update Options in the right above picture and select Update Now.

Solution 6. Stop ClickToRunSvc Service

The above Case 4 usually happens when a computer wakes up from sleep or hibernation. If a Microsoft Office app is forever responding, the most likely culprit is the ClickToRunSvc service. Just disable it to solve the problem.

Step 1. Right-click on Taskbar and choose Task Manager.

Step 2. Switch to the Services tab.

Step 3. Find and right-click on ClickToRunSvc. Then, select Stop.

Then, you can try to open any office file to see whether the problem is solved or not.

Solution 7. Repair Microsoft Office

No matter which Office application you are using, you may make use of the Microsoft repair feature to repair the Microsoft Office won't open error.

Step 1. Search “control panel” in Windows Taskbar and open Windows Control Panel.

Step 2. In Control Panel, select Uninstall Programs under the Programs section.

Step 3. In the programs list, right-click on Microsoft Office and choose Change.

Microsoft outlook won
Tip: If there are more than one versions of Microsoft Office (365, 2019, 2016, 2013, 2010, 2007, etc.) installed on your computer, just target the one that you are currently having problems with.

Step 4. In the next pop-up new window, select either of the repair types (Quick Repair or Online Repair) and click Repair to start.

Step 5. When the repair finishes, restart your PC.

Finally, try to open your Microsoft Office apps to see whether you can open them or not. If not, it means your problem still exists. Then, move to the next solution.

Solution 8. Uninstall Unused Microsoft Office Versions

Just like mentioned above, if you have more than one versions of Microsoft Office installed on your computer, you should uninstall the ones that you do not use or you do not use frequently. The reason is that keeping various versions of Office on your PC can result in problems like files opening with the wrong version of Office app like the above Case 2.

Step 1. Go to Uninstall Programs section in Windows Control Panel.

Step 2. In the Programs and Features window, within the list of apps under Uninstall or change a program, find the unnecessary Microsoft Office version, right-click on it and select Uninstall.

Then, just follow the guidance to finish the uninstallation.

Solution 9. Reinstall Microsoft Office

Many software problems may be solved by reinstallation. So as Microsoft Office won’t open Windows 10. Just go to the official website of Office, download, and install your Office version.

Solution 10. Troubleshoot Microsoft Office File Association

In this method, you need to rely on an official troubleshooting pack cabinet.

Step 1. Download the program.

Step 2. Click on the downloaded file to trigger the troubleshooting process.

Step 3. In the pop-up window, click Next and follow the guide to deal with Microsoft Office File Association problem.

Try to reopen your Office files and see whether you can open them or not. If not, continue with the following solutions.

Solution 11. Manually Associate Files to the Correct Office Program

If the above automatic file association won’t work, then, you can manually set file association in Windows Settings.

Step 1. In Windows 10, click Start in the bottom left corner and select Settings.

Step 2. In the Windows Settings window, choose the Apps option.

Step 3. On the Apps & Features screen, select Default apps tab in the left menu.

Step 4. Scroll down to find “Set defaults by app” and click it.

Step 5. On the next screen, find the problematic Microsoft Office app, click on it, and select Manage.

Step 6. Then, find the file extension you failed to open and set its default app as the Office program. Just click on the current matched app and select the target Microsoft Office app.

If there are more than one Office programs that won’t open, you just need to repeat the above steps.

Solution 12. Open Microsoft Office in Safe Mode

Another method is to try to open Office files in computer safe mode. The following will take open a Word file in safe mode for example.

Step 1. Open Windows Run box by pressing “Windows + R”.

Step 2. Type “winword /safe” and press Enter.

Step 3. Then, you will see the Word opens in safe mode.

The following are the orders for opening other Office programs in Safe Mode via Run box. They are all based on Microsoft Office Professional Plus 2016 on Windows 10.

  • Excel: excel /safe
  • PowerPoint: powerpnt /safe
  • Outlook: outlook /safe
  • Access: msaccess /safe
  • Publisher: mspub /safe
  • OneNote: onenote /safe
  • Visio: visio /safe

Solution 13. Disable Microsoft Office Add-ins

Sometimes, damaged add-ins may prevent your Office files from opening or opening without showing contents. So, disable or remove them will solve Microsoft Office won’t open problem. The following guide is based on Microsoft Word.

Step 1. Launch the Word program.

Step 2. Navigate to File > Options > Add-ins.

Step 3. At the bottom of the Add-ins tab, select COM Add-ins in the drop-down menu and click Go…

Step 4. In the COM Add-ins dialog, uncheck all add-ins and click OK to exist.

Then, reopen your Word document to see the result. You can also uncheck one add-in at one time to figure out which add-in is the culprit. If you can’t locate the problematic add-in, it is possible that more than one add-ins together cause your Office files won’t launch.

Tip: Once you locate the problematic add-in(s), you can remove it/them from your Word app in the above dialog by checking it/them and clicking Remove.

What is Microsoft Office File Validation Add-in? How to remove this feature from Office 2020? See this post to get answers to these questions.

Solution 14. Update Windows

As we all know that Office and Windows are of the same Microsoft family. Microsoft regularly releases Office updates within Windows Update. Thus, if you can’t open your Office files and you are not up-to-date on your Windows, you may solve your problem by updating your Windows system.

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Also, maybe some outdated system programs are not compatible with your office apps, so they prevent you from opening your office files. Thus, update those system apps by update Windows will help.

Solution 15. Uninstall Windows Update

If you encounter Microsoft Office won’t open issue after Windows update like described in Case 1 at the start of this article, it probably is the update that matters. Then, just uninstall the update is the fix.

Step 1. In Windows Settings, continue to Update & Security.

Step 2. In the default Windows Update tab, click “View update history”.

Step 3. There, click Uninstall updates on the top.

Step 4. In the Uninstall Updates window, right-click on the latest you have installed and select Uninstall.

Follow the guide to finish the uninstallation.

Solution 16. Repair Corrupted File System

Sometimes, the file system crash will also result in files not open. So, have a check at yours and repair the crashed file system.

Step 1. Download and install a reliable tool that can repair the file system. Here, MiniTool Partition Wizard is recommended.

Step 2. Launch the program. Right-click on the partition (volume) where the problematic files are located and select Check & fix detected errors.

Step 3. Click Start to carry out the diagnosis.

Solution 17. Remove Old Printer Drivers

A few users mention that having old printer drivers installed on the computer may also prevent the Office from working. If you have, just remove those drivers. You can find a way in this article.

If you find that the Print Spooler keeps stopping and want to find some workable methods to solve the problem, then this post is what you need.

solution 18. Scan Virus on Your Computer

There is also a chance that Microsoft Office won’t open due to attacks from viruses, malware, spyware, ransomware, trojan, hijack, etc. Therefore, it is necessary to run a full scan for those viruses relying on anti-virus software, such as Windows Defender, Avira, or Avast.

If unfortunately, your files are corrupted or lost during the virus attack, you can try to recover them with a professional and powerful file recovery program like MiniTool Power Data Recovery.

Solution 19. Post in Microsoft Office Community

If none of the above solutions work for you, you can go to the Microsoft Office community to find further solutions. Or, you may consider contacting the Microsoft Office support team for a method.

Microsoft Outlook Won't Open On Mac

Back up Microsoft Office Files by MiniTool ShadowMaker

Just like said above, open Office won’t open may be caused by ransomware, malware, spyware, etc. viruses. And, those viruses may destroy Microsoft Office files completely and make them can’t be recovered by any reliable recovery software.

Then, what should you do? If you have a backup of those files that were created before the virus attack, you are lucky. You can restore those Microsoft Office files based on the backup. So, yes, to create a backup of important files is of great importance.

Then, how to make a backup of computer files? Let’s hand it to a professional and reliable data backup tool called MiniTool ShadowMaker. To make use of this program, first of all, you need to download and install it on your PC. This process is free of charge.

Step 1. Launch MiniTool ShadowMaker on your machine and click Keep Trial on its first screen.

Step 2. On its second screen, switch to the Backup tab on the top menu.

Step 3. In the Backup tab, click the Source module on the left to select the Microsoft Office files or the folder containing Microsoft Office files.

Step 4. Click the Destination module on the right to select the backup target place. You can choose another local disk or external hard drive.

Microsoft Outlook Won't Open On Mac

Step 5. Then, you can review the backup task. If everything is right, just click Back up Now to start the process immediately.

Wait until the backup task completes. The time it will take depends on how much data you set to back up. In general, it won’t take too long.

The Microsoft Office 2019 for Windows and Mac has been launched since September 24, 2018. You can read this post to learn this new thing.

Write at the End

I believe at least one of the above solutions will solve your Microsoft Office won’t open problem, for most of you. Of course, there are still other fixes that haven’t been listed in this article. If you are willing to, feel free to post them in the comment section. Thanks for your reading!

Some Fixes to Solve Error “Cannot Start Microsoft Outlook 2016”?

Alvina Gupta ❘ August 2nd, 2018

The MS Outlook application is widely used by email clients. So, it’s a very common thing that you have faced some unwanted errors and bugs. You might have a query like:

“I cannot start Microsoft Outlook 2016.” or “Outlook Won’t Open Issues”

This error is so often, you can find many queries regarding this problem. So, don’t panic, you will definitely find the solution to fix cannot open Microsoft Outlook. In this article, the reasons behind this error and its solution are explained very clearly.

Causes of “Cannot Open Outlook Window” Error

When you try to open MS Outlook by double-clicking on its icon, then an hourglass will appear and it is hanging for a second. The error will appear likely “Cannot start Microsoft Office Outlook” or “Cannot open the Outlook Window” on your system. The reasons for this error are:

  • According to Microsoft the corrupted Navigation Pane settings file – xml, is responsible for this error. Here “profilename” is the name of your Outlook profile. If its size is 0kb, the error can be rectified.
  • If you are using MS Outlook is in compatibility mode, there is a possibility of Outlook not starting.
  • MS Outlook can decline to start even when you are using an old profile on an older Outlook version.
  • Frequently, when you do improper uninstall and reinstall of applications on the system may cause Outlook to not start.
  • If any MS Outlook file or its settings got damaged or deleted, it will corrupt the whole application and stops it to open.

Methods to Recover “Cannot start Microsoft Outlook 2016”

Fix #1 Repair the Navigation Pane settings file

You can repair Navigation Pane settings file by performing the following procedure:

  1. Click on Start button, now type outlook.exe/resetnavpane.
  2. Then select the file then launch the Outlook application

Fix #2 Create a New Profile for Outlook

If you create a new Outlook profile and transfers all your old data to it. Then, problems within Outlook are solved. The steps to recreate a new profile are:

  1. Choose Start, go to Control Panel then choose Mail.
  2. To create a new profile, in the Mailbox, click on Data Files > Add.
  3. Then, set your newly created profile as a default profile.
  4. Launch MS Outlook. It will open the new profile.
  5. For importing the old data into the new profile, open the Outlook window.
  6. Then click on File>> Open>> Import >> Import from another program.
  7. Choose the old data file and click on Next.
  8. When the import procedure is completed, click Finish.

Fix #3 Disable Compatibility Mode in MS Outlook

If your Outlook is running in Compatibility mode, then disable it. To disable the Compatibility mode steps are as follows:

  1. Click the Start button, type exe in the search field.
  2. Right-click the Outlook.exe file.
  3. Click Properties tab, choose Compatibility.
  4. Deselect the compatibility mode checkbox and click OK.
  5. Then restart the Outlook application.
  6. If you find compatibility mode is still on, then search for the PST file.
  7. Choose Restore previous versions.

Fix #4 Start Outlook in Safe Mode Without Add-ins

Sometimes, add-ins create the problem with Microsoft Outlook in the Safe mode to resolve the “MS Outlook Cannot Start” error. Here are the steps to start Outlook in Safe Mode.

  1. Click Start, then type Outlook /safe.
  2. Then press the Enter key.
  3. Click on Yes, when the display message appears to know if you really want to open Microsoft Outlook in the safe mode.

Fix #5 Recover Outlook File Using Inbox Repair Tool

Due to an improper uninstall of a previous version, the PST file is corrupted or damaged, sometimes it refuses Outlook from opening. To recover a corrupt Outlook data file, perform the following steps

  1. Open the Windows Explorer, then navigate Program Files >> Microsoft Office.
  2. In the Search option, type exe and find the SCANPST.EXE file.
  3. Double-click on the SCANPST.EXE file and then browse the location of the PST file.
  4. Click Start to initiate the scanning process. If there are still errors in the PST file, the below message will display:

Note: “Errors were found in this file. To repair these errors, click Repair”.

  1. Then click on Repair.
  2. Launch your Outlook application with the PST file after the repair process is complete.

The Inbox Repair Utility/ScanPST.exe is an efficient tool to detect and repair corrupt PST file. But, sometimes it fails to repair crucial corruptions. In this case, there is an alternative SysInfo Outlook PST Repairtool.

It can recover maximum content from your damaged or corrupt PST files. It can restore all Outlook email items like Emails, Calendars, Contacts, and Distribution groups, etc.


Hope this article helped you get the solution of your error “Cannot start Microsoft Outlook 2016”. The demerit of some method is also discussed so it’s your choice to go for any method.

What To Do When Microsoft Outlook Won't Open

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