Outlook crashes when opening Calendar

Outlook crashes when opening Calendar

Story Highlights

How to fix Outlook crashes when opening Calendar

Applies on Microsoft Outlook 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013 and Outlook 2010

Outlook users encounter an error whenever they attempt to open their calendar, Outlook stops responding or freezes and closes. Their Outlook crashes when opening calendar invitation and prompts an error “Microsoft Outlook has stopped working”.

Outlook Crashes When Opening Calendar
Error Message

Microsoft Outlook has stopped working. Windows can check online for a solution to the problem and try to recover your information and restart the program.
Faulting application name: OUTLOOK.EXE, version: 16.0.14430.20298, time stamp: 0x61611dfd
Faulting module name: wwlib.dll, version: 16.0.14430.20292, time stamp: 0x615f71fb
Exception code: 0xc0000005
Fault offset: 0x00000000019326ae
Faulting process id: 0x5e34
Faulting application start time: 0x01d7c160efcf5cba
Faulting application path: C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE
Faulting module path: C:\Program Files\Microsoft Office\root\Office16\wwlib.dll
Report Id: b003da3f-f25b-4389-a430-feb1b0128aa4

Causes of Outlook crashes when opening Calendar

Below mentioned are the various potential triggers that make Outlook crashes when opening calendar invitation:

  • Add-ins or Extensions causing the issue
  • Corrupted WWLIB.DLL file
  • Corrupted Outlook Profile
  • Corrupted Office installation

Resolution of Outlook crashes when opening Calendar

Performing the below-mentioned solutions and workaround help you avoid Outlook crashes when opening calendar

  • Disable Third-Party Add-ins
  • Replace WWLIB.DLL File
  • Uninstall or Remove KB2817631
  • Create a new Outlook Profile
  • Repair Microsoft Office
Solution
1

Disable Third Party Add-ins

Faulty or Corrupted add-ins can cause Outlook crashes when opening Calendar. Starting Outlook in Safe Mode can let you safely use it while it has encountered problems. This is helpful when you can’t open a file in normal mode because the application is crashing or there is an extension or add-in causing a problem on startup.

In safe mode, Outlook may not open with the options provided by add-ins but can perform basic operations.

  • Find the shortcut icon of Outlook.
  • Press and hold the CTRL key and double-click the Outlook icon shortcut.
  • Click Yes on the prompt to start the application in Safe Mode. Or Press Windows+R keys to open the Run box. Type “outlook/safe” into the “Open” field, and then hit Enter or click on Ok to launch Outlook in Safe mode.
  • Once Outlook is open click on File > Manage Add-ins.
Manage Add ins
  • Under Manage add-ins, in the Turned on column, uncheck the box for the add-in you want to turn off.
COM Add ins

If Outlook fails to open in Safe Mode, you may be required to reinstall the application from a reliable resource.

Solution
2

Replace WWLIB.DLL File

WWLIB.DLL file is part of the Microsoft Office system. Outlook crashes when opening Calendar invitation also caused due to corrupted WWLIB.DLL file. We need to replace the WWLIB.DLL file in order to avoid Outlook crashes when opening Calendar.

For Outlook 2016

  • Close Outlook.
  • Navigate to following locations as per bitness of the Office installation
    • 32 Bit : C:PROGRAM FILES (X86)/MICROSOFT OFFICE/OFFICE16
    • 64 Bit : C:PROGRAM FILES/MICROSOFT OFFICE/OFFICE16
  • Rename WWLIB.DLL to WWLIB-ORIG.DLL
  • Download the WWLIB.DLL file and place in the same location as per the bitness

For Outlook 2013

  • Close Outlook.
  • Navigate to following locations as per bitness of the Office installation
    • 32 Bit : C:PROGRAM FILES (X86)/MICROSOFT OFFICE/OFFICE15
    • 64 Bit : C:PROGRAM FILES/MICROSOFT OFFICE/OFFICE15
  • Rename WWLIB.DLL to WWLIB-ORIG.DLL
  • Download the WWLIB.DLL file and place in the same location as per the bitness
Solution
3

Uninstall or Remove KB2817631

Microsoft has pushed out an update for Outlook 2013 named KB2817631 For some users this resulted in a crash in outlook when they opened a Calendar Item, this was only happening on Invitations.

The solution to resolve the problem “Outlook crashes when opening calendar” is quite easy all you have to do is delete this particular update.

  • Go to Start and click on Control Panel.
  • From Category view, under Programs, click on Uninstall a program. or Press Windows+R keys to open the Run box. Type “appwiz.cpl” into the “Open” field, and then hit Enter or click on Ok to launch Programs and Features.
  • From Programs and Features, on the Left pane, click on View installed updates.
View Installed Updates
  • In Installed updates, you will find all the updates installed. From this list search for the 2817631 update.
  • Once you find the update, select the update and click on Uninstall to remove it from the system.
Uninstall Windows Update
  • Restart the system once the update is completely removed from the system.
Solution
4

Create a New Outlook Profile

A profile is a critical part of your Outlook experience. The outlook profile consists of the accounts, settings, and data files that specify where your emails are saved. A corrupted mail profile can also cause the outlook crashes when opening calendar. To fix an outlook profile, you need to open the profile from the Control panel. Windows hide the Mail icon in a Control panel group and many users have trouble finding it. can’t find it. We recommend users open the Control Panel and type Mail in the search field, or switch to classic or Icon view.

Note: if you use a 32-bit version of Outlook 2013 or 2010 on a 64-bit version of Windows, the Mail icon is labeled “Mail (32-bit)”. In Outlook 2013 and above, the Outlook version is added to the applet name, using this format: “Mail (Microsoft Outlook 2016) (32-bit)”. In Outlook 365, it’s just “Mail (Microsoft Outlook)”.

To create a new profile from the Outlook, do the following:

  • In Outlook, select File > Account Settings > Manage Profiles
Outlook Account Information Manage Profiles
  • Choose Show Profiles > Add.
  • In the Profile Name box, type a name for the profile, and then choose OK.

You can add mail accounts to your profile, like Gmail Yahoo, or Live.com. Or you can change options for your account’s data files.

To create a new profile from the Control panel, do the following:

  • Click on Start and search Control panel to open the Control Panel. OR Press Windows Key + R to open Run command, type “control” in the open field, and click Ok.
Control Panel Run Command
  • Type mail in the search field and let Windows find it OR change the view to large or small icons and look for the Mail applet.
  • Double-click on Mail to open it.
Mail in Control Panel
  • Once the Mail Setup dialogue will open. Click on Show Profiles.
Mail Setup Outlook
  • The profile(s) currently set up will be listed. Click Add to add a new profile.
Mail Profiles
  • Enter a name for your new profile.
Create New Mail Profile
  • Complete the steps for adding your account.
Add Account Outlook
  • Make sure the new profile is set as your default profile.
Set Default Mail Profile

Now try to open Outlook, and perform the actions in the Calendar to ensure it’s working fine.

Solution
5

Repair Office installation

Corrupted Office installation can also cause Outlook crashes when opening Calendar. Try to fix the problem by repairing the Office installation.

  • Go to Start and click on Control Panel.
  • From Category view, under Programs, click on Uninstall a program. or Press Windows+R keys to open the Run box. Type “appwiz.cpl” into the “Open” field, and then hit Enter or click on Ok to launch Programs and Features.
  • Select the Office product you want to repair, and then click Change.
  • Depending if your copy of Office is Click-to-run or an MSI-based install, do the following for your Office installation type:
    • Click-to-Run installation type: In How would you like to repair your Office Programs, select Quick Repair to detect and replace corrupted files and then select Repair.
    • MSI-based installation type: In Change your installation, select Repair and then click Continue.
  • Follow the remaining instructions on the screen to complete the repair.
Repair Microsoft Office
  • Restart the system once the office is repaired.

Now try to open Outlook, and perform the actions in the Calendar to ensure it’s working fine.

We’ve compiled all the resolutions and workarounds verified by the experts to fix the mentioned error. These resolutions and workarounds helped the users to fix the error on their system. Try implementing these resolutions on your computer and if the preceding suggestions fail to solve the error, please feel free to Ask an Expert.

Frequently Asked Questions

  1. Why does my Outlook crashes when opening calendar?

    Microsoft Outlook crashes when opening calendar due to faulty or corrupted add-ins, corrupted profile, missing DLL files, or corrupted Office installation.
  2. What causes Outlook to stop working?

    Outlook can stop working due to faulty or corrupted add-ins, corrupted profiles, or corrupted Office installation.
  3. How do I get my outlook to work again?

    Start your Outlook in safe mode. Press Windows+R keys to open the Run. Type “outlook /safe” and hit Enter to launch Outlook in Safe mode. Disable the third-party add-ins and try using Outlook. If the issue still persists, consider repairing your Office installation.

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