An email client is a computer program that manages its user’s email. Microsoft Outlook is one of the most widely used email clients. It is popularly used by many corporate organizations as well as naive users. It comes with the Microsoft Office suite; if you do not have that, there is no need to worry, as it also comes as a separate application. If you’re using Microsoft Outlook, it is undeniable that you might encounter many errors that this application throws. Out of all those errors being thrown, one of the most common errors is 0x8004010F: Outlook Data File Cannot be Accessed. Just keep on reading to find out your solution.

ms outlook

To overcome this, you can turn off the cached mode in MS Exchange. Go to Control Panel > Mail > Email Accounts, select your preferred account, and click the “Change” button. Still not working? This article is going to answer all those questions and provide more methods. The reasons for this error and the ways to fix it are mentioned in the following article.

Although the users of the Microsoft Outlook application are extensive in number, most of them are very much annoyed by the errors thrown by it. Most of you, the users of Microsoft Outlook, would have come across the 0x8004010f: Outlook Data File Cannot be Accessed error. There might be several questions rolling in your mind related to this error. The Outlook data file cannot be accessed issue is caused by syncing errors between Exchange and Outlook.

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When Does Error 0x8004010F: Outlook Data File Cannot be Accessed Occur?

  • The error generally occurs while sending or receiving emails. It is a ubiquitous Messaging Application Program Interface (MAPI) error.
  • The error might also occur during an Offline Address Book (OAB) synchronization.
  • It can also happen while downloading OAB files.

You will most likely receive this error when performing a send/receive operation on a mail. The error might look like the one below.

SEnding Reported Error (0x8004010f): Outlook Data File Cannot Be Accessed

Receiving reported error (0x8004010f): Outlook data file cannot be accessed

0x8004010f: The operation failed. An object could not be found

Why Does Error 0x8004010F: Outlook Data File Cannot be AccessedOccur?

In Microsoft Outlook, when connected to the Exchange Server, all the email-related data is stored in the Offline Storage Table (OST) File. This OST file helps the user’s work to continue even if the server is down. The changes are reflected in the OST temporarily and then back to the Exchange Server once the server becomes active. The Outlook Data File Cannot be Accessed error might occur for the reasons mentioned below.

  • Your Outlook profile has been corrupted.
  • Outlook folders’ location (.PST file’s location) in the drive has been changed.
  • Your OST might be damaged.
  • However, the Outlook Profile might not be configured correctly.
  • The old OST file might be being used even after upgrading to a newer version of Outlook.
  • The Personal Storage Table (PST) File might be misconfigured.

Now we know the reasons for the error. So, now, we would need some method to resolve this error and stop being annoyed by the error.

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How to Fix Error 0x8004010F: Outlook Data File Cannot be Accessed Error?

The 0x8004010F: Outlook Data File Cannot be Accessed error hinders you from sending or receiving any mail. So, solving this problem should be a primary need. If you encounter this error message frequently, some solutions exist to resolve it, and the following methods describe how to do so.

Method #1 Creating a New Outlook Profile

If you are using the 2010 or 2013 version of Microsoft Outlook, all you need to do is create a new Outlook profile using a POP3 or IMAP email account. There is a different solution for both types of users.

For Microsoft Outlook 2010 Users

Follow these steps to create a new profile.

1. First, launch the Microsoft Outlook application in your system. Then, navigate to File>Account Settings.

account settings

3. Afterwards, a dialog would open up. Click on the Email tab on that dialog box.  Select the account in which you receive the error message.  Click on the Change Folder button.

change folder

6. Now, the New Email Delivery Location dialog will open up. Afterward, click on the New Outlook Data File… button.

new outlook data file

7. Afterwards, provide a name to this new Outlook data file (e.g., “TEST“) and click OK. Now expand this new data file (e.g., “TEST“) and select the Inbox sub-folder. After that, click on OK.

select inbox subfolder

9. Now, get back to the Account Setting dialog box again. Click on the Change Folder button again.

change folder

10. This time, select the correct data file & folder where you want to store your emails. After that, click OK.

select correct data file

11. Now close the Account Settings dialog box and click the Send/Receive button. You are good to go. This would fix 0x8004010F: Outlook Data File Cannot be Accessed error.

Note: - Make sure that while you implement the above method, you are not connected 
to Microsoft Exchange Server.

For Microsoft Outlook 2013 Users

The account can be set up automatically as well as manually. Follow the steps below to create a new Outlook profile in Outlook 2013.

For Automatic Setup:

1. First of all, navigate to the Control Panel. Then click on the Mail in the list. Click the Show Profiles button on the Mail Setup – Outlook dialog box.

show profiles

4. Afterwards, a Mail dialog box would open up. Click the Add button in the General tab to create a new profile. Enter a new name for this new profile you want to make, then click OK. Once the profile is created with a unique name, then delete the old one.


6. Use the Auto Account Setup option to add a new account to your profile. Or type a new profile name in the new profile dialog box & hit OK. Enter a valid email address & account information in the Add new account box. Press Next.

add new account

7. If you’re using POP3, tick the Change account setup option. You can use old PST data files using this option. Now, click on the Next button.  Then select the old data file & exit from the dialog box.

choose existing outlook data file

9. Afterwards, tap on Next once your account is successfully configured. Finally, restart the Outlook.

For Manual Account Setup:

1. First, go to the Control Panel. Then click on the Mail in the list. Click the Show Profiles button on the Mail Setup – Outlook dialog box.

show profiles

4. A Mail dialog box would open up. Hit the Add button in the General tab to create a new profile.


5. Afterwards, enter a new name for the new profile you want to create and click OK. Select Manually Configure server settings or additional server types & click on Next to proceed further.

manually configure server settings or additional server types

7. A new dialog box named Choose Service will open. Select Internet Email from it & click on Next.

internet e mail

8. Type your email account settings in the Internet Email Settings dialog box. Then, click on Text Account Settings… to test your account. Now, select Existing Outlook Data Files & click on Browse.


11. Afterwards, select the Outlook data file that you previously located & click on OK. Hit OK & close the test account settings dialog box. At last, click Finish.

Whether you follow the manual or automatic process, the above steps will create your new profile for Outlook, and then you need to set up this new profile. The steps below will help you set the newly created profile as default.

  • Navigate to the General tab on the Mail dialog box.
  • After that, choose the Always to use this profile option and select the profile that you just created.
  • Press the Apply button and then click on the OK button. Close the dialog box, and you are good to go.

Check Also: – 

Method #2 Keep Profile Method

Some users of Microsoft Outlook may have more than one email account in Outlook, so creating a new profile may not be a feasible solution for them. But resolving the Outlook Data File Cannot be Accessed Error is a need for them, too. Such users should follow the steps mentioned below.

1. Navigate to File>>Info>>Account Settings>>Account Settings in Outlook application.

outlook account settings

2. Then go to the Email tab & highlight the account with the issue. Now, click on the Change folder option. Then click on New Outlook Data File… & create a temporary data file.

create temporary data file

4. Afterwards, provide any name to this File & hit OK. Expand this File & select the sub-folder Inbox. Press OK & go back to Account Settings.


6. In the Account Settings, click on the Change folder again. After that, select the correct data file & folder that you need for your emails. Press OK.

correct data file

8. Finally, switch back to the data files & remove the Temporary PST file from there.

remove temporary pst file

9. Close the dialog box & click Send/Receive option. This would probably resolve the issue of 0x8004010F: Outlook Data File Cannot be Accessed.

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Method #3 Turn Windows Defender Firewall off

Follow the steps mentioned below to disable the antivirus from your system.

1. Click on Start Menu and type “Run” in the search box or press Win Key+R as a shortcut.

type run

2. In the Run window, type “Firewall.cpl.”


3. However, a Windows firewall will pop up. Click Turn Windows Defender Firewall on or off from the menu’s left pane.

turn windows defender firewall on or off

5. After doing so, under the Public network Setting, turn Off Windows Defender Firewall and press OK.

turn off windows defender firewall

Make sure that you follow the steps mentioned above only if it is the only option because turning the Firewall off affects the security of your system.

Method #4 Repairing Your System

1. At First, press Window Key+R to open Run.  Type “cmd” in the search box and hit OK.

open cmd

3. Afterwards, type “sfc /scannow” (Without quotes) in the Command Prompt and press Enter.


4. Then, wait for a few minutes. However, the System would perform the required repairs automatically.  After that, reboot your system, and 0x8004010F: Outlook Data File Cannot be Accessed is solved.

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Method #5 Install Windows Updates

1. First, go to the Settings App and select the Updates & Security option. update and security


2. After that, go to Windows Updates, and to check if there are any updates available, click on the Check for Updates option.

check for updates

3. Afterwards, install the updates if there are any available. Once the updates are done, reboot your system.

Method #6 Repair Outlook Data Files

One of the reasons for the Outlook Data File Cannot be Accessed error might be some problem with the Outlook file. However, the solution to this can be to repair that File. To do so, follow the steps mentioned below.

1. Close your Microsoft Outlook application and open File Explorer using Windows Key+E.

2. Now, browse to one of the following locations:

Outlook 2016: C:\Program Files (x86)\Microsoft Office\root\Office16, Outlook 2013: C:\Program Files (x86)\Microsoft Office\Office15, Outlook 2010: C:\Program Files (x86)\Microsoft Office\Office14, Outlook 2007: C:\Program Files (x86)\Microsoft Office\Office13

3. You will find a file named SCANPST.EXE. Double-click to Open it.

scabpst tool

4. As the program starts to run, enter the name of. PST file you want to repair. You can also browse for the File instead of writing it manually.

5. After that, click on the Start button.

start button outlook

6. Afterwards, click the Repair button once the scanning is complete.

repair button outlook

7. You can start working with Outlook once the process is complete. The error 0x8004010F: Outlook Data File Cannot be Accessed won’t come across you.

Method #7 Check the Ownership Over the File

It might be possible that the File you are trying to use is not under your ownership, i.e., you might not have permission to read/write from/to the File. Because of this, there is a chance of the Outlook Data File Cannot be Accessed error. To fix this, you need to own that File, which can be done as follows.

1. First, locate the File you are trying to use and right-click on it. Then click on the Properties option from the menu. Navigate to the Security tab and then click the Advanced button.

advanced button

4. Afterwards, check the Owner section of the File. Click the Change link if it’s set to an unknown user name.


5. Enter your username and click Check Names in the Enter object name. If your user name is correct, click on OK. However, if it is not right, you must have made some spelling mistake in entering the username. Correct that and try again.

check names

6. Now, the owner section would change to your username. Don’t forget to assign Full Control to this account. Click Apply and then on OK to save changes.

Method #8 Disable Cached Exchange Mode

The Cached Exchange Mode can interfere with Microsoft Outlook and, thus, result in causing Outlook Data File Cannot be Accessed error. So, to fix the problem, this mode should disabled. To disable the Cached Exchange Mode, follow the steps mentioned below.

1. First, open Microsoft Outlook on your system. Then, navigate to File>>Account Settings>>Account Settings.

account settings

3. Then select the Exchange or Office 365 account and click Change.


4. Now, uncheck Use Cached Exchange Mode.

use cached exchange mode

5. Afterwards, click on Next & then Finish. Finally, restart the Outlook application, and you can work with it.

Don’t Forget: – 


What does the error message 'Error 0x8004010F' mean?

This error indicates that Microsoft Outlook cannot access or locate the Outlook data file.

Why does the error 0x8004010F occur in Microsoft Outlook?

The error 0x8004010F is usually due to problems with the Outlook data document file, or when the default Outlook data file is missing or improper.

How to fix the error 0x8004010F in Outlook?

There are several steps you can take to identify this error: Check the appropriate data document way in Outlook settings first. Examine any problems with antivirus or security software interfering with Outlook. Recreate the Outlook data file and import your data if necessary.

Where can I find the Inbox Repair Tool (scanpst.exe) to fix the error?

To begin, the Inbox Repair Tool (scanpst.exe) is a Microsoft Outlook built-in utility. As a result, it is usually present in the following location: Program FilesOutlook 2019, Outlook 2016, or Outlook for Microsoft 365:Microsoft OfficerootOfficeXX (XX is the version number).

If the above solutions don't work, what should I do to fix the error?

If the error persists after attempting the above solutions, you can try repairing or reinstalling Microsoft Office or contacting Microsoft Support for further assistance. To summarise, they can provide additional troubleshooting steps tailored to your situation and assist you in resolving the problem.

Final Words

So far, we have established that the main reason for the 0x8004010F: Outlook Data File Cannot be Accessed error occurs because of corruption of Outlook data files. However, there can be some other reasons possible, too.

These were some methods to resolve the 0x8004010F: Outlook Data File Cannot be Accessed error, and thus, use them to solve your error. Hope you found these methods helpful and use them to fix the error and quickly use Microsoft Outlook. Stay updated.


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