Recover Deleted Contacts From Outlook 2016

How to Troubleshoot Calendar Problems in Outlook 2016

After upgrading to Outlook 2016, many people have experienced issues with Outlook calendar. If you are one among them who has experienced a problem with calendar, then this article is surely going to help you to solve the issues associated with your Outlook calendar.


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Problem #1: Unable to open appointments on shared calendar

The problem is Outlook stooped responding, when trying to open an appointment on a shared calendar.


  1. Click on File tab and select Account Settings
  2. In Account Settings, click on Email tab and then select the e-mail account
  3. Hit Change Account button and then press More Settings
  4. Select the Advanced tab and clean the Download Shared Folders box
  5. Click on Finish and restart Outlook

If it doesn’t work, then disable Cached Exchange Mode for your account. For disabling Cached Exchange Mode follow the below mentioned steps-

  1. Go to File tab and select Account Settings
  2. In the Account Settings window, select the Email tab
  3. Then select the email account and click on Change Account
  4. Next, disable Use Cached Exchange Mode and restart Outlook

Problem #2: Outlook 2016 calendar permission issue on Exchange 2010

Unable to create or edit calendar entries in Outlook 2016 which is connected to Microsoft Exchange 2010. It shows an error stating that –"You don't have permission to create an entry in this folder. Right-click the folder, and then click Properties to check your permissions for the folder. See the folder owner or your administrator to change your permissions."


This kind of error arises, if you manually configure Exchange account. To fix this auto-configure your Exchange account and add an A-Record pointing it to the Exchange server SSL IP. Then edit/add entries in Outlook shared calendar.

Problem #3: File type .ics won't open in Outlook 2016

Outlook 2016 fails to open iCalendar files and shows “File not recognized” error.


First try Cleaner to remove unwanted and unused file type associations from the registry. Next, make sure that you have completely uninstalled previous version before upgrading to Outlook 2016. To do that, go to- HKCU\Software\Microsoft\Office and HKLM\SOFTWARE\Microsoft\Office. And check whether registry key is set to 16.0 or not. If not, then it means Office 2013 is not completely removed. Remove the old version completely.

Problem #4: Calendar Items Missing after Outlook 2016 Upgrade

After installing Windows 10, Office 365 was upgraded to Outlook 2016. And, all the Outlook attributes migrated to Outlook 2016 except calendars.


Go to Windows. Old folder and search for \Users\ \Documents\Outlook Files\Outlook.pst. Then import your PST file to Outlook 2016 and get access to all the calendar items. To import Outlook PST file, follow below-mentioned procedure-

Go to Outlook and open it. From the File menu, click Import and Export option. Then, select Import from another program or file option and click on Next followed by Comma Separated Values (DOS). In the Import a File box window, browse to select PST file and double-click the file. Next, choose one of the following:

  • Replace duplicates with items imported
  • Allow duplicates to be created
  • Do not import duplicate items

Select the folder to save the imported file and click Map Custom Fields to add or remove fields. And finally, click on Finish button.

Sometimes, you will not find Outlook.pst in windows.old folder due to some unknown reasons. Hence, it is recommended to take a backup of PST file before upgrading. If you have a backup of PST file, then you can easily transfer your Outlook calendar and other Outlook attributes after upgradation. For taking backup and moving your Outlook PST file, you can make use of Migrate Outlook software.

Here is the complete guide on how to backup and migrate Outlook Calendar using Migrate Outlook Software-

Download the Migrate Outlook software and install it on your computer. Next, run the application. To know how to backup PST file using Migrate Outlook software click here.

Step 1: When the main window appears, select the Migrate option


Figure a: Main window

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Step 2: In the next window, you have to select the backup file, which you want to migrate using Browse button


Figure b: File path and expected backup file size


Step 3: Next, select the items to migrate i.e. calendar and click on Next button


Figure c: Backup Summary


Step 4: The software starts migration process. Wait until process gets completed.

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