When MS Outlook is used while connected to the Exchange server, all mailbox data on the server is stored locally in a file called Offline Storage Table (OST) file. This file can be seen as a replica of the user’s Exchange mailbox since it stores all records of the account residing on the server, locally. The main role of this file comes into play if the Exchange server experiences downtime due to technical issues or maintenance. In such cases, the users can continue to work with the OST file locally without interruptions and any changes they make to the account are merged with their Exchange account once the server comes back up.
However, there could be instances where users face errors while trying to access their Exchange mailbox data through the OST file. Such errors might be caused due to faulty synchronization between Outlook and Exchange or due to problems with the OST file. More often than not, problems within the OST file trigger mailbox access errors.
This article sheds light on a common Outlook Data file error 0x8004010F, and the methods to fix it.
Outlook error 0x8004010F and the reasons behind it
An OST file is prone to damage because of various factors. These include corruption due to overgrown size, virus attacks, damage due to accidental shutdown etc. While these are the most common causes behind them, OST issues can often spring up due to human errors. Let’s take a scenario into consideration.
Suppose you’re using Outlook 2010 or 2013 and while sending/receiving emails you see the error:
"0x8004010F: Outlook data file cannot be accessed"
"0x8004010F: The operation failed. An object could not be found"
This is a common MAPI error and it occurs at the time of synchronizing an offline address book, during send/receive operation, or while downloading the OAB files. The primary reasons behind this error are:
This error will prevent you from sending or receiving any emails so resolving it at the earliest should be your first priority.
How to fix Outlook errors
Depending upon the real cause behind the error, you could opt for different ways to apply Outlook error fix. The fixes explained below are applicable to Outlook 2010 and Outlook 2013.
1. Create a new Outlook profile
If the reason behind the error is a corrupted Outlook profile, creating a new one will fix the error. For this, find the current location of your default Outlook data file (in the case, the OST file), and then create a new Outlook profile. Here are the steps to do this:
Step 1: Locate the default Outlook data file
Step 2: Create new Outlook profile
Auto-setup IMAP or POP3 email account
Manual method to create IMAP or POP3 email account
Step 3: Configure the new Outlook profile as the default profile
2. If creating new Outlook profile isn’t possible
Some users have multiple email accounts in Outlook and creating a new Outlook profile might not be feasible for them. In such a case, they can follow the below-mentioned procedure to fix the OST file error 0x8004010F:
Changing message delivery location to a temporary folder and then changing it back refreshes Outlook settings. This can fix the error.
If none of the above methods work, OST corruption might be the culprit. To repair the OST, convert it to PST format using trustworthy third-party OST to PST converter Stellar Converter for OST. This commercial tool is backed by powerful algorithms to accurately convert OST file into PST format. The converted PST file can then be imported into Outlook to access data.