While copying a file or installing third-party software on Windows 10, sometimes the operation fails with a message saying “Operation did not complete successfully”. The said message is accompanied by the code 0x800700e1.

It may even happen that your antivirus flags the file or software as malicious or unwanted. This is not always the case because even the best antivirus can misidentify a file.

We explain below how to resolve this error so that you can continue with your installation or copy successfully.

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Where does error code 0x800700E1 come from?

Very often, it is Windows Defender, the native antivirus of Windows, which prevents the installation of software or the copying of a file under the pretext that it is malicious or unwanted.

Here is how to fix error code 0x800700E1 The operation did not complete successfully on Windows 10 –

Temporarily disable Windows Defender

Windows Defender is the native antivirus of Windows 10. That is to say, as soon as you install Windows 10, you already have Windows Defender installed as well.


There are three methods to disable Windows Defender.

Disable Windows Defender from the Settings menu

  • Press Windows key + I simultaneously to open the Windows Settings menu.
  • Click on “Update & ecurity”.
  • On the left pane, click Windows Security or Windows Defender if you are on a version earlier than Windows 10.
  • Now go to the right pane and click on the first option “Virus & threat protection”.
  • Scroll down and select Virus & threat protection settings.
  • Disable real-time protection
  • If a warning is displayed, select Yes to validate.

Once it’s done, you can resume installing your software in peace, it should work without problems this time.

But remember to re-enable Windows Defender real-time protection after installing the software. This is a solid option for securing your computer.

It may happen that you cannot disable Windows Defender by the above method. You must then use the Registry Editor to do so.

But first, you should know that touching the Windows Registry can cause serious damage to your system functions. It is therefore advisable to create a restore point before making any changes to the registry.

Here’s how to disable Windows Defender from Registry Editor

  • Press the Windows and R keys at the same time to open the Run dialog box.
  • In the text box that appears, type “regedit” then click OK to continue.
  • In the left pane, navigate to the path Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender
  • Look for the DisableAntiSpyware DWORD located in the right pane. If you don’t see the value, you can create a new one by right-clicking in an empty area and selecting New > DWORD (32-bit) Value.
  • Give this new value the name DisableAntiSpyware
  • Finally, double click on it, put 1 in the Value data field and click OK to save these changes.

The above method will permanently disable Windows Defender and error 0x800700E1 might be fixed. To enable Windows Defender again through the Registry Editor, delete the DWORD file you just created.

Disable Windows Defender from Group Policy Editor

If you’re worried about editing the registry because it’s risky, apply gpedit to disable Windows Defender.

  • Full press Win + R and type gpedit.msc in the blank space, then press Enter.
  • Once the new window appears, go to the left pane and navigate to the path “Computer Configuration > Administrative Templates > Windows Components > Windows Defender”.
  • Now move to the right pane and double-click on the “Turn off Windows Defender” option.
  • Check the Enabled box, then press the Apply and OK button to save the changes.

Windows Defender is not always the only antivirus to cause problems when installing software or copying a file. Other antiviruses like Avast may be guilty of this.

How to Disable Antivirus to Fix Error 0x800700E1 the operation did not complete successfully.

Avast is the most popular antivirus on Windows 10. However, in some cases it turns out that Avast itself is responsible for causing error 0x800700E1: The operation did not complete with success in your system.

To deactivate Avast, find the Avast icon on the far right of the taskbar, right-click on it and choose “Manage Avast Agents”. In the context menu that appears, click to deactivate all Avast agents for a certain period.


As soon as your software is installed or your file is copied, repeat the same procedure to reactivate all Avast agents and take the opportunity to perform a complete analysis of your system.

Repair the problematic file that causes error 0x800700E1

Command Prompt is an amazing built-in tool to solve some problems.

To attempt to repair the file causing the 0x800700E1 error:

Simultaneously press the Windows and S keys, then type cmd.exe. Right-click on the result in the Best Match section and select Run as administrator.

Type the commands below and press Enter to execute.

sfc /SCANFILE=c:windowsexplorer.exe


sfc /SCANFILE=C:WindowsSysWow64explorer.exe

Restore your computer to its last working good date to resolve error 0x800700E1

System Restore is another way to fix error 0x800700E1.

Press the Windows and S keys simultaneously, type system protection, then Enter. Select Create a restore point in the Best match section.

In the next wizard that appears, click System Restore…

Select the Next button to move to another window.

Choose a restore point as per your convenience and click Next.

Finally, select Finish and follow the on-screen instructions.

Important: This method will only work if you have already created a restore point on your PC.

Prevent patch or crack removal

Error code 0X800700E1 is often also due to Patch or crack attempts, because Defender will consider the Patch as malware.


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