Outlook Data File Cannot Be Accessed Error 0x8004010F (Solved)

This error usually occurs due to corrupt Outlook profile or inaccessible Outlook data files (OST or PST). Here is how to fix this problem.


Microsoft Outlook is one of the best and most convenient emailing software that provides several amazing features to its users. But sometimes you may encounter error 0x8004010f or “Outlook Data File Cannot Be Accessed” while sending/ receiving email in Outlook 2016. This error typically indicates a problem with the Outlook data file (PST or OST) that stores your emails, contacts, and other vital information. Again corruption of the Outlook profile, Incompatible or outdated add-ins or If Outlook is forcefully closed or experiences a crash while it’s in use, it can lead to data file corruption “Outlook Data File Cannot Be Accessed”. This article explores some of the best and easy methods by which you can fix this issue and regain access to your Outlook data.

Outlook Data File Cannot Be Accessed

Several factors can lead to the “Outlook Data File Cannot Be Accessed” on Windows 11. It may be the Outlook data file, whether it’s a PST (Personal Storage Table) or an OST (Offline Outlook Data File), can become damaged due to various factors.

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Incorrectly configured Outlook profiles, Outdated versions of Outlook or incompatible add-ins or Outlook is closed abruptly without allowing it to properly save and close its data files, it can lead to file corruption.

In some cases, underlying hardware issues, such as problems with the storage device where the data files are located, can contribute to this error.

Repairing Outlook Data File and Creating a New Outlook Profile is very helpful to fix such problems. Let’s first Turn off the antivirus utilities, and disconnect from VPN if configured.

Repairing Outlook Data Files

A corrupted PST or OST file is the primary cause of the issue, if For some reason, the Outlook data file becomes damaged or incomplete, Outlook struggles to read and process the data within them and result “Outlook Data File Cannot Be Accessed” on Windows 11.

You can repair the Outlook Data files (.pst) using the Inbox Repair Tool, also known as scanpst.exe. It’s a built-in utility provided by Microsoft to identify and fix various types of errors and repair corrupted PST (Personal Storage Table) files.

The scanpst.exe tool is typically located in the Outlook installation directory. The exact path may vary depending on your system configuration, but it is usually found in C:\Program Files\Microsoft Office\Office16.

Locate scanpst.exe Tool

  • Right-click on SCANPST and select run as administrator, click ye when it prompts for permission.
  • click on the “Browse” button to locate and select the corrupted PST file that you want to repair.

Repair outlook pst file to fix outlook data file cannot be accessed error


Note: This file is the one displaying the “Outlook Data File Cannot Be Accessed” error.

After selecting the file, click on the “Start” button. The tool will begin scanning the PST file for any errors or inconsistencies.

It’s advisable to create a backup of the original PST file before proceeding with the repair to ensure that no data is lost during the process.

Setting up the new Outlook profile

Outlook Data File Cannot Be Accessed 0x8004010f usually occurs because of corrupted Outlook user profiles, and You can fix it by setting up new Outlook profiles based on default data files. Let’s first identify the current location of your default Outlook data file and then create a new Outlook profile.

locate the default Outlook data file.

  • Open control panel,
  • Choose View by Small icons. Click Mail then click on the Show Profiles button.

Show outlook profile

  • Select your current Outlook profile
  • Then click the Properties button next Click Data Files.
  • Now switch to the Data Files tab, note down the name and location of the default Outlook profile and click the Close button.

locate outlook data file

Create a new Outlook profile.

  • Open the Mail Setup window by using the Control Panel again.
  • Click Show Profiles, select your current Outlook profile and then click the Add button to open a New Account window.
  •  Type a name for the new profile and click OK.

Create new profile outlook

  •  Type your email information and user credentials in the Add Account window then click Next then Finish The account is created.

Configure outlook user profile

  • Also, you can use the manual setup button to create an Outlook profile following
  • Click the Manual setup or additional server types radio button click next,
  • Choose Service, select POP or IMAP to connect to a POP or IMAP account, and click Next,
  • In POP and IMAP Account Settings, input your account details.
  • Under Deliver messages, select Existing Outlook Data File. Click Browse and, select the Outlook data file of the previous account and click OK. Then click Next.

Manually setup outlook

And finally, Set the New Outlook Profile as the Default

  • To do this again Open Mail with the Control Panel again.
  • Click Show Profiles, choose Always use this profile and then choose the new profile from the drop-down menu Click OK to exit Mail.

Set default outlook profile to fix outlook data file cannot be accessed error

Disable Windows Defender Firewall

Sometimes Windows Defender Firewall blocks websites and there are chances it is blocking Outlook and you are facing this issue on your PC. If this is the scenario, you must disable the Windows Defender Firewall.

  • Type firewall in the search box, and select to open Windows Defender Firewall.
  • Click Turn Windows Defender Firewall on or off on the left side of the Control Panel window.
  • Click both Turns off Windows Defender Firewall under Private network settings and Public network settings to disable Windows Defender Firewall.

Turn off windows Defender firewall

Now check if there is no more error while trying to send or receive an email in Outlook.

In addition, Open Outlook in Safe Mode: Press Win + R, type Outlook/safe, and press Enter. Go to File > Options > Add-ins. Here Disable suspicious or unnecessary add-ins. This helps identify if a problematic add-in is causing the issue.

Also read:

Steve Ballmer
Steve Ballmer
With over 7 years of experience in the IT industry, I have experience in IT support, helpdesk, sysadmin, network admin, and cloud computing. Certified in Microsoft Technologies (MCTS and MCSA) and also Cisco Certified Professional in Routing and Switching.

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