Outlook crashes when opening Calendar

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.

• Under Manage add-ins, in the Turned on column, uncheck the box for the add-in you want to turn off.

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

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

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.

• 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.

• Restart the system once the update is completely removed from the system.

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

• 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.

• 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.

• Once the Mail Setup dialogue will open. Click on Show Profiles.

• The profile(s) currently set up will be listed. Click Add to add a new profile.

• Enter a name for your new profile.

• Complete the steps for adding your account.

• Make sure the new profile is set as your default profile.

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

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.

• 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.