Microsoft has a full fledge Office suite called Microsoft Office that includes all of the modules required to operate an organization. Outlook is one of them and it is a stand-alone e-mail application including a calendar, task manager and contact manager etc. So, it has all those features which are required to remain informed about the meetings, events etc.
With time; and the usage of Outlook; its data file (OST/PST) can be corrupted which results in issues with Outlook; such as Folder missing/send receive errors, etc
This corruption can be resolved by fixing the outlook data files using the Microsoft Outlook Inbox Repair Tool (scanpst.exe) which is included in the Office install directory. To get it done, follow the instructions below.
Browse to your Office Installation Folder depending on your Version.
Office 2016 (64-bit): C:\Program Files (x86)\Microsoft Office\Office 16
Office 2016 (32-bit): C:\Program Files\Microsoft Office\Office 16
Office 2013 (64-bit): C:\Program Files (x86)\Microsoft Office\Office 15
Office 2013 (32-bit): C:\Program Files\Microsoft Office\Office 15
Office 2010 (64-bit): C:\Program Files (x86)\Microsoft Office\Office 14
Office 2010 (32-bit): C:\Program Files\Microsoft Office\Office 14
Office 2007 (64-bit): C:\Program Files (x86)\Microsoft Office\Office 12
Office 2007 (32-bit): C:\Program Files\Microsoft Office\Office 12
Inside the Office folder, search for the file called exe. You can use the search box located at the top right of the Window in order to search for the file. Double click over the file to execute.
A Microsoft Outlook inbox Repair tool will open as a result of the execution. Click on Browse button to locate the data files.
If you are using Windows 7 or latest versions of Windows, then you can find the Outlook data files inside the following directories.
Note: Please make it sure that you do unhide the hidden files inside your system before proceeding further.
.ost file Directory: C:\Users\username\My Documents\Outlook Files
.pst file Directory: C:\Users\username\AppData\Local\Microsoft\Outlook
You can use any of the following data files to start the repairing process.
After selecting the file, click on the Start button and a scanning process will be initialized. It would scan the files and after the completion, it would ask to repair Just click on Repair button and let it do the rest of hefty work for you.
After the repair finishes, look for the stats on the program if it reports that there still were some errors, then continue to run the repair again and again; sometimes it has to be repaired over 5 times depending on the corruption and the number of errors. The first time; it is run it will be slow but the subsequent repairs will be quicker. After the process is finished, check your Outlook file again and see if it is fixed or not.