Outlook desktop application uses 2 types of data files to internally store copies of emails, calendars, contacts and other items, allowing users to access information without an Internet connection.
If you are using an account Outlook.com, Outlook 365 or ExchangeThese information are stored in an offline Outlook Data file using .ost format. However, if you are using a POP or IMAP account like the account you get from an Internet Service Provider (ISP), your information is stored in an Outlook Data file using a format. pst.
Usually you can run files for a long time without having any problems. However, sooner or later these files may also stop working, and possibly be damaged. That’s why Outlook comes with a built-in Inbox Repair tool to diagnose and repair common .pst file errors, or to recreate .ost files automatically.
The following article ElectrodealPro will guide you how to fix common problems with Outlook .pst files and .ost data.
Fix Outlook Data File (.ost) errors offline
If you have an Outlook.com, Outlook 365, or Exchange account, you can follow the steps below to fix the problem with the .ost data file on Outlook:
Step 1: Close Outlook.
Step 2: Open Control Panel.
If you’re only using the default Outlook profile, you can use path % LOCALAPPDATA% Microsoft Outlook To access the .ost file location directly, then continue to step 13. If not, follow the steps below.
Step 3: Click to select User Accounts.
Step 4: Click to select Mail.
Step 5: On the Mail Setup window, click the button Show Profiles.
Step 6: Select the profile whose account you want to fix. (On Outlook 2016, the default profile is called Outlook)
Step 7: Click the button Properties.
Step 8: Click the button Email Accounts.
Step 9: Click to select Data Files tab.
Step 10: Select the account to be corrected.
Step 11: Click the button Open File Location.
Step 12: Before you do, make sure you close the Accounts Settings, Mail Setup and Mail windows.
Step 13: Right click on the file .ost for the faulty account, select Delete.
After completing the above steps, reopen Outlook to automatically create a new .ost file for your specific account.
Fix Outlook Data file (.pst)
If connecting your account using POP or IMAP settings, you can follow the steps below to fix the .pst data file error:
Step 1: Open Outlook.
Step 2: Open File Explorer (press Windows + E).
Step 3: Browse below:
C: Program Files (x86) Microsoft Office root Office16
If you’re using Outlook 2013, use path C: Program Files (x86) Microsoft Office Office15.
If using older versions of Outlook, you change Office15 in the city path Office14 for Outlook 2010 or Office13 for Outlook 2007.
Step 4: In the folder find and double-click the file SCANPST.EXE.
Step 5: Click the button Browse and find the file .pst that you want to fix.
Step 6: Click the button Start.
Step 7: Click the button Repair.
After doing the above steps, the wizard will create a backup, perform the repair, and create a new log file containing information about the repair process.
After the repair is finished, you can start opening the Outlook application associated with the data file.
Additional recovery instructions
While Microsoft tools can fix common problems with Outlook .pst and .ost data files, the recovery process may require additional steps to download all your items.
For example, after this process you may find that some folders are recreated in the inbox as empty folders. And you can see folders Recovered Personal Folders or directory Lost and Found located in the left frame. These folders contain items that have been repaired but cannot be restored.
To restore items, follow the steps below:
Step 1: Open the folder Recovered Personal Folders or directory Lost and Found.
Step 2: Select the items you want to restore.
Step 3: Drag and drop items into the correct folder.
Step 4: Delete empty folders.
If the items still fail, you can use the .pst backup file to restore additional items using the tool Import / Export Built-in:
Step 1: Select the file .bak are located in the same directory as the file .pst.
Step 2: Press F2 and rename the file .bak.pst then press Enter.
Step 3: Open Outlook.
Step 4: Click select File.
Step 5: Click to select Open & Export.
Step 6: Click the button Import / Export.
Step 7: Choose an option Import from another program or file.
Step 8: Click to select Next.
Step 9: Choose an option Outlook Data File (.pst).
Step 10: Click to select Next.
Step 11: Specify the file location .pst.
Step 12: Choose an option Import.
Step 13: Click to select Next.
Step 14: Select the items you want to import.
Step 15: Click to select Finish.
Once you’ve done these steps, you can use Outlook with all your data as usual.
By following the instructions above, you should be able to fix common problems with Outlook.pst and .ost data files. In order to prevent any Outlook problems, you should regularly back up your Outlook 2010, 2007, 2013, 2016 data to ensure your data is always safe. Good luck.