A spate of recent updates caused problems in Outlook 2013, and the short-term fix is to uninstall the update; however, updates can’t be uninstalled from the Click-To-Run installations of Office 2013, and almost all users have the Click-To-Run installation.
Instead, you will need to revert to an earlier version.
In Outlook 2013 (this is an Outlook help site after all), go to File, Office Account, Update Options and click on Disable Updates.
Next, create an appointment in your calendar for 30 days from now to remind yourself to check for updates. In many cases, the “bad” file will be removed or replaced with a corrected update, and you can allow Office to install updates without reinstalling “trouble” after a few weeks have passed.
Now you’re ready to roll back the click-to-run installation.
Type cmd on the Start screen in Windows 8 or in the Start menu’s Search field if using Windows 7, then right click on it and choose Run as Administrator.
Change the directory to the path of integratedOffice.exe. To do this, in the command prompt window, type (or copy and right-click paste) the following if you are running 64-bit Office:
cd %programfiles%\Microsoft Office 15\ClientX64\
or this if using the 32-bit version of Office:
cd %programfiles%\Microsoft Office 15\ClientX86\
You’ll use the Online Repair tool to revert to the previous version of Office. Do this by running integratedoffice using a command line in this format, where 15.0.xxxx.xxxx is the previous version.
integratedoffice.exe REPAIRUI RERUNMODE version 15.0.xxxx.xxxx
The command line you'll use will look something like this:
integratedoffice.exe REPAIRUI RERUNMODE version 15.0.4517.1005
You can get the version numbers from Microsoft Office 2013 Click-to-Run virtualization
Choose Online Repair. Once repair is complete you can check your version to verify it updated properly. Note: you'll probably be asked to log in again and verify your license.