Windows 8.1 0xC1900101 – 0x40017 Error

This error is known as Windows Update error. It appears on Windows 8 while downloading and installing updates. It's not difficult to deal with this error. This article provides expert recommended solutions that have already helped many users.

Fix Shockwave Flash Step 1

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Disconnect External Devices

Your computer may have external devices connected. An external device such as hard disk, usb drive, printer may be malfunctioning or not supporting your system. This in turn results in Windows 8.1 0xC1900101 – 0x40017 Error.

Disconnect external devices and remove drivers of malfunctioning/ unsupported devices. The best way to identify such devices is to show hidden devices, look at a yellow color exclamation mark in the Device Manager.

  • Press the Windows Key.
  • Type "Control Panel" in the Search Box.
  • Click the Apps icon.
  • Open it from the Search Results.
  • Click System and Security | Administrative Tools.
  • Double click Computer Management.
  • Expand System Tools | Device Manager from the left hand side panel.
  • Click View | Show hidden devices.
  • Do you see any hardware with yellow color exclamation mark? If so, right click such devices, select Uninstall option.

Refresh your PC

PC Refresh is the procedure of uninstalling all programs, setting default settings. It doesn't harm Windows Store applications. It is strongly recommended to backup your documents before proceeding.


  • Press the Windows Key.
  • Type "Refresh" in the Search Box.
  • Click the Settings icon.
  • Open it from the Search Results.
  • Follow the on-screen instructions.

Repair the Registry

Scan for Registry errors and repair them immediately. Registry errors are the major reason behind this error.

  • Download Reginout System Utilities..
  • Install and run the program.
  • Start full scan and fix all errors instantly. You won't receive Windows 8.1 0xC1900101 – 0x40017 Error again.

Delete VAIO Update Files [For Sony VAIO Users Only]

This step is for Sony VAIO laptop users only. Your update files can be corrupt. Delete the update files as shown below:

  • Double click My Computer desktop icon.
  • Open the following folder: C:\ProgramData\Sony Corporation\VAIO Update
  • Delete all files and sub folders from the VAIO Update folder.

Showing Hidden Files & Folders:

Is your “ProgramData” folder hidden? Unhide it through the Folder Options dialog. Here's how:

  • In My Computer window, press Alt key of your keyboard.
  • Press V key or click the View tab in the Ribbon Interface on top.
  • Check-up the box labelled “Hidden items”.

Clear Windows Store Cache

Like other programs on your computer, Windows Store contains a cache folder where most frequently used files are stored. Windows 8.1 0xC1900101 – 0x40017 Error appears due to corrupted cache contents.


  • Press Windows Key + R keys simultaneously to open Run box.
  • Type "WSReset.exe" in the Open textbox.
  • Click OK or press ENTER.
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