Fix ‘Error Code: 0x8030002F’ When Installing Windows

The Error Code 0x8030002F occurs when you are trying to upgrade your Windows or when you are trying to install a fresh copy of Windows. This issue occurs when Windows think that the ISO file you are using has been tampered with or it’s modified by a third party. Windows will stop users from Installing modified versions of Windows for security purposes. It is definitely not recommended to use a Windows Image that isn’t original as it can be malicious.

Windows Error Code 0x8030002f

After investigating this particular issue thoroughly, it turns out that there are several different underlying causes that might be responsible for the apparition of this error code. Here’s a list of potential culprits that might be responsible:

  • Installation media is a modified version of Windows – The number one cause that will trigger this error is a situation where the user tries to upgrade to the latest version using a modified version of the Windows installation media. To resolve this problem, you will need to create a genuine copy of the installation media and use that instead.
  • Corrupted HDD / SSD sectors – As it turns out, some kind of system file corruption can also trigger this error if the corruption affects the MBR or BCD files used during the upgrading process. In this case, running a CHKDSK scan should allow you to resolve the issue.
  • Corrupted Boot Configuration data – If you’re only seeing this error while attempting to upgrade your Windows version to the latest, you should attempt to run a series of elevated CMD commands aimed at preparing the boot configuration data.
  • System File Corruption – Under certain circumstances, some kind of system file corruption can cause this error when attempting to upgrade the Windows version to the latest. If this scenario is applicable, you can either go for a clean install or you can attempt to fix the corrupted system files with SFC and DISM scans.

Now that you are familiar with every potential culprit that might be responsible for this error, here’s a list of potential fixes that other affected users have successfully used to resolve this error code:

Install a Non-Modified Windows Version (if applicable)

One of the most common causes that might end up producing this error code is a situation where the user attempts to install or upgrade their current Windows version from a modified version of the installation media (DVD or flash drive).

You can expect to see the 0x8030002f if you have a genuine Windows 7 version and you want to upgrade to the latest version of Windows 10 with a modified installation media.

If this scenario is applicable and the installation media that you are trying to use is not genuine, the only way forward is to ensure that you are using genuine installation media.

If you’re looking for step by step instructions on creating compatible installation media (USB or DVD) for Windows 10 or Windows 7, use the following guides:

If this scenario is not applicable to your particular situation as the installation media that you’re using is genuine, move down to the next potential fix below.

Deploy a CHKDSK scan

If you only see the 0x8030002f error while you attempt to upgrade an older Windows version to Windows 10 using compatible installation media, you’re most likely dealing with some kind of  HDD / SSD sector corruption that is affecting the MBR or BCD files.

In case you find yourself in this particular scenario, you should go for a CHKDSK (Check Disk Scan) to ensure that no logical sectors are causing this behavior. If this is the source of the 0x8030002f error, CHKDSK will replace the corrupted logical sectors with unused healthy equivalents.

Note: CHKDSK comes pre-installed on every recent Windows version including Windows 7 and Windows 8.1

To deploy this scan, follow these instructions to deploy a CHKDSK scan from an elevated Command prompt.

Deploying a CHKDSK scan

Note: Should the utility discover some corrupted sectors that cannot be replaced, you can conclude that the drive is failing and you’ll need to look for a replacement as soon as possible.

If you already performed a CHKDSK scan and the same kind of issue is still occurring, move down to the next potential fix below.

Run SFC and DISM scans

Keep in mind that this 0x8030002f error is often associated with some kind of system file corruption, so your next step (if the first methods have failed) is to run a couple of built-in utilities that are capable of fixing the most common causes that will cause widespread system file corruption.

Running SFC (System File Checker) and DISM (Deployment Image Servicing and Management) scans in quick succession should allow you to fix the big majority of potential issues that might be triggering this error code.

The two built utilities share some similarities, but we recommend running both types of scans in quick succession in order to maximize your chance of fixing the issue without having to do a clean install or repair install.

You should start with an SFC scan. This scan will use a local archive to replace corrupted Windows files with healthy equivalents – NO Internet Connection is required. 

Running SFC scan

Note: After you start this operation, avoid closing the elevated CMD window or restarting/shutting down your computer. Doing this exposes your PC to the risk of additional local issues affecting your HDD / SSD.

Once the SFC scan is complete, reboot your computer and initiate a DISM scan once your computer boots back up.

Doing a DISM scan

Note: Different from an SFC scan, DISM requires a stable Internet connection to replace corrupted files with healthy equivalents. This is necessary because instead of using a local file archive like SFC, DISM uses a sub-component of Windows Update to download fresh copies untainted by corruption.

After the DISM scan is complete, restart your computer one final time and see if the problem is fixed once the next startup is complete.

If the same problem is still occurring, move down to the next potential fix below.

Repair the Boot Configuration data

If you see this error while attempting to upgrade your Windows version to the latest and every other potential fix above has failed in your case, you should investigate is a potential corruption that might be affecting the MBR files or boot configuration data.

Use the Boot Configuration Data (BCD) utility to locate the Windows boot files on all disks and add them back to the boot list so that the booting sequence can locate them during startup. This fix is especially helpful in situations where you are dual-booting.

IMPORTANT: This method will require a compatible installation of Windows installation media. In case you don’t have one at the ready, you can create the Windows installation media from scratch and load it on a USB drive.

After you ensured that you meet all the requirements, follow the instructions below:

  1. Start simple by plugging in the USB stick containing the installation media before starting your computer normally via the power button.
  2. Next, access the Setup key by pressing the correspondent button depending on your motherboard manufacturer.
    Accessing the Boot menu

    Note: The setup key will be different from manufacturer to manufacturer. In most cases, the Setup key is either one of the F keys (F2, F4, F6, F8), or the Esc key. In case you’re having trouble accessing the Setup menu, search online for specific instructions on accessing it.

  3. At the Setup menu, access the Boot tab and make sure to set the USB stick containing the installation media as the first boot option.
    Changing the Boot order
  4. Save the changes and reboot your computer to allow it to boot from the installation media.
  5. After you successfully boot from the installation media, select Repair your computer from the bottom-right corner of the screen.
    Repairing your computer
  6. Once the Recovery menu loads, access the Troubleshoot menu and click on Command Prompt from the list of available options.
    Note: You can also boot from the Recovery menu (without booting from the installation media) by forcing 3 consecutive system interruptions during the startup procedure.

    Opening an elevated Command Prompt
  7. Next, type the following command and press Enter to fix the MBR dependencies associated with your Windows installation:
    bootrec /fixmbr
  8. After the first command is processed successfully, type the following command and press Enter to fix the Boot Configuration Data associated with your Windows installation:
    bootrec /fixboot

    Note: If you get the ‘Access is denied’ error while inputting one of the 2 commands above, follow these instructions to fix the bootrec access problem

  9. After the FixBoot command is processed, type the following command and press Enter to scan all your disks for the Windows installation media:
    bootrec /scanos

    Note: This operation can take over 10 minutes depending on the size of your partitions. Don’t close this window until the operation is complete. 

  10. After the operation is finally completed successfully, type the following command to effectively rebuild the BCD configuration data:
    bootrec /rebuildbcd
  11. When asked to confirm, go ahead and type Y before pressing Enter to confirm and start the operation.
    Fixing the Bootrec data
  12. Finally, type ‘exit’ and press ENTER to effectively leave the elevated CMD prompt.
  13. Repeat the Windows installation/upgrading process that was previously causing the 0x8030002f to see if the problem is now fixed.

Kamil Anwar

Kamil is a certified MCITP, CCNA (W), CCNA (S) and a former British Computer Society Member with over 9 years of experience Configuring, Deploying and Managing Switches, Firewalls and Domain Controllers also an old-school still active on FreeNode.