In Microsoft Windows Media Player version 7.1, when you try to play or to connect to a multicast station, you may receive the following error message:

This error message occurs even though the code checks for duplicate multicast packets, and Windows Media Player is designed to handle the duplicate packet gracefully.

  • The error code 0x8000ffff means your Windows 10 is having update issues. This error usually appears after Windows updates and locks the Windows Store. Besides, it can crop up after your performing the system restore or when you try to install a newly downloaded app. We hope that the following tips will help you fix this issue.
  • Potable Water Test Kits. The CMT Potable Water Test Kit enables ships staff to monitor the quality of the drinking water on board the ship by providing tests for important operational control parameters and verification tests for bacteria that can be of risk to human health. The range of tests can be used on the ship either as a standalone.

Remote play will not work on my Sony Xperia Z2 tablet. The fix is found in the comments.



A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.
To resolve this problem immediately, download the fix by clicking the download link later in this article or contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMSNOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
The following file is available for download from the Microsoft Download Center:

Download Wm313718.exe nowRelease Date: January 2, 2002
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to Obtain Microsoft Support Files from Online Services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.
The English version of this fix should have the following file attributes or later:
Date Time Version Size File name
08-Nov-2001 19:59 335,360 Wmstream.dll


To work around this problem, use Microsoft Windows Media Player version 6.4.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the 'Applies to' section of this article.

‘The best is yet to come’
Author Unknown

The world is changing rapidly, and it is quite a wise idea to keep your Windows up to date. However, such a path might seem rather thorny – it just so happens that Windows updates are so good at trying your patience before introducing great innovations. The notorious 0x8000ffff error is a case in point.

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The error code 0x8000ffff means your Windows 10 is having update issues. This error usually appears after Windows updates and locks the Windows Store. Besides, it can crop up after your performing the system restore or when you try to install a newly downloaded app.

We hope that the following tips will help you fix this issue.

The Windows 10 Update Error 0x8000ffff can be caused by:

  • Malware Infection
  • Faulty or Out-Of-Date Drivers
  • Incorrect Date and Time Settings
  • Unnecessary Drivers or Processes
  • Corrupted Windows Store Cache
  • Problematic Windows Store App
  • Missing or Corrupted System Files
  • Limited Access
  • Corrupted Registry Entries

P.S. If you don’t want to read the full article, you may simply watch a short video showing a quick fix here:

Download free utility: https://bit.ly/34WubQj
Here are our top 12 tips to fix Windows 10 Update Error 0x8000ffff:

1. Check Your Computer for Malware Infection

First and foremost, let’s find out whether your computer is malware-infected. Removing nefarious intruders will help you fix the 0x8000ffff issue and save your system from further damage.

Here are 3 easy ways to identify and handle malware infection:

Utilize Windows Defender

Windows Defender is a built-in antimalware tool. If it happens to be the only security solution installed on your computer, Windows Defender does its best to keep your Windows 10 safe. If you have another antivirus installed, Windows Defender is still at work performing occasional system scans.

If an occasional scan is not enough, make use of a deep offline scan with Windows Defender:

  1. Start menu -> Settings -> Update & Security
  2. Windows Defender -> Windows Defender Offline -> Scan Offline

Your computer will reboot, and then you will be able to check whether the issue has been resolved.

Run Your Main Antivirus Program

Scan your Windows 10 with your main antivirus solution in order to identify and remove all the malware issues from your computer.

Provide Extra Protection

Code 80001fff

In order to conquer malicious invaders, you may need additional scanning performed by a special anti-malware tool. For example, Auslogics Anti-Malware can detect and erase the threats your main antivirus may miss.

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2. Tweak Your Drivers

Corrupted or obsolete drivers might be the reason for the error 0x8000FFFF appearing on your screen.

Here are some tips to deal with problematic drivers:

Use Driver Update

Updating your drivers may resolve the problem in question. Thanks to the Driver Update option, Windows 10 can search for updated driver software:

  1. Start -> Settings -> Update & Security -> Check for updates
  2. Choose the driver you need from the list and click Install.

Use Driver Verifier and Device Manager

You can fix driver issues manually by making use of the built-in Windows Driver Verifier:

Start menu -> Type verifier -> Enter

Driver Verifier may detect the device that causes Windows 10 error 0x8000ffff.

Then you should utilize Device Manager in order to resolve this issue:

  1. Win + X -> Device Manager -> Expand the device entries
  2. Search for the problematic driver -> Right-click on it -> Update Driver Software

3. Set Correct Date & Time

Incorrect date and time can cause the 0x8000ffff error and block Windows Store. Set valid date and time to resolve Windows 10 update issues:

Date and time on the taskbar -> Date and time settings -> Turn on ‘Set Time Automatically’

4. Boot in a Safe Mode with Networking

Unnecessary drivers, processes and features can tamper with your updates. Try booting in a Safe Mode with Networking to exclude spoilers and update your system and/or apps successfully:

  1. Start -> Settings -> Update & Security -> Recovery -> Advanced Startup
  2. Restart Now -> Choose an option -> Troubleshoot -> Advanced Options
  3. Startup Settings -> Restart -> Safe mode with Networking

Now try to perform the necessary updates.

Does the error code 0x8000ffff keep popping up?

No panic, the following tips may help you.

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5. Clear Windows Store Cache

The Windows Store cache can become corrupted and therefore rather troublesome: it can bring about various update problems, for example the notorious error 0x8000ffff.

To fix it, try clearing your Windows Store cache:

Windows key + R -> Type WSReset.exe -> Enter


Windows key + S -> Type wsreset -> Right-click ‘wsreset’ -> select Run as Administrator -> Yes

Now try to reopen the Windows Store and download the apps you need.

If the 0x8000ffff error has not been removed, do the following:

  1. Windows key + R -> Paste %localappdata%PackagesMicrosoft.WindowsStore_8wekyb3d8bbweLocalState -> OK
  2. Find the Cache folder -> Right-click on it -> Rename -> Type Cache.old
  3. If there is no such folder on your computer, create a new folder and name it Cache -> close File Explorer
  4. Windows key + I -> Updates & Security -> Troubleshoot -> click Windows Store App -> Run a scan

If the error in question is still present, the Windows Store cache is certainly not the one to blame.

Just proceed to the following tips.

6. Tweak Windows Store

Reconfigure Windows Store

Sometimes Windows Store itself causes the error 0x8000ffff and stops working properly.

To fix this issue, try reconfiguring the temperamental app:

  1. Start menu -> Type PowerShell -> Right-click the result -> Select ‘Run as Administrator’
  2. Type powershell-ExecutionPolicy Unrestricted Add-AppxPackage-DisableDevelopmentMode-Register
  3. Env:SystemRootWinStoreAppxManifest.xml -> Reboot your computer

No luck?

Do not let this take the wind out of your sails! Keep going.

Reinstall Windows Store

Reinstalling Windows Store may help you fix the 0x8000ffff error.

Keep in mind that Windows Store is an in-built Windows app. To reinstall it, you should follow these instructions:

  1. Windows key + R -> Type PowerShell -> Enter
  2. Right-click the search results -> Select Run as Administrator
  3. Type Get-Appxpackage –Allusers -> Enter
  4. Windows Store entry -> copy the package name (Ctrl + C)
  5. Type Add-AppxPackage -register “C:Program FilesWindowsApps” –DisableDevelopmentMode
  6. Insert the Windows Store package name (Ctrl + V) instead of PackageFullName
  7. Change C: with the letter of your root driver
  8. Windows key + R -> Type PowerShell -> Enter -> Right-click the results and select Run as Administrator
  9. Paste Add-AppxPackage -register “C:Program FilesWindowsApps” –DisableDevelopmentMode -> Enter
  10. Replace the PackageFullName and C:
  11. Reboot your computer

7. Mend your System Files

Missing or corrupted system files can be the reason for the error code 0x8000ffff.

Here are some tips to resolve this issue:

Run System File Checker:

  1. Start -> Enter Command Prompt -> right-click Command Prompt -> select Run as administrator -> Enter DISM.exe /Online /Cleanup-image /Restorehealth -> Enter sfc /scannow
  2. Wait for the system scan to finish -> Reboot your Computer

Run Check Disk Utility:

  1. Local Disk -> Properties -> Tools -> Error Checking ->Check OR Windows button (right click) -> Command Prompt (Admin) -> Type CHKDSK /f /r -> Enter ->Type Y -> Enter
  2. Wait for the process to finish -> Reboot your computer

8. Switch to Administrator Account

Your guest account may not have the rights to let you update your system or apps. Change to an admin account in order to tackle your update challenge:

Start Menu -> Click on the user picture -> Sign out -> Administrator account -> Log in again

Try to open Windows store and access the updates you need.

If the 0x8000ffff issue has not vanished, proceed to the following recommendations.

9. Edit Registry Entries

Please note that modifying registry entries is a risky business. If performed improperly, it can cause an irreversible damage to your system. That is why we strongly recommend you to use professional tools for this purpose – free and safe Auslogics Registry Cleaner are among them.

If you still want to edit your registry entries manually, hold your breath and follow the instructions:

Back up your Registry entries or create a system restore point

To avoid negative repercussions, you should either back up your Windows 10 Registry

  1. Start menu -> Type regedit.exe -> Enter
  2. Select the registry keys and/or subkeys you want to back up -> File > Export -> Choose the location and name for the backup file -> Save

or create a System Restore point:

  1. Start menu -> Type restore -> Create a restore point
  2. System Properties -> Create -> Describe briefly the restore point -> Create.

Edit your Registry using Command Prompt:

  1. Start menu -> Search for Command Prompt -> Right-click Command Prompt -> Run as administrator
  2. Type reg /? -> Enter -> Explore the operations types you can use to edit the registry

To remove entries, use the following syntax:

REG DELETE KeyName [{/v ValueName /ve /va}] [/f]

The descriptions:

  1. KeyName: the path to the subkey or entry (It can be HKLM, HKCU, HKCR, HKU, or HKCC).
  2. /v ValueName: the name for the registry key you want to delete.
  3. /ve: defines if you’re deleting an entry that has a null value.
  4. /f: deletes registry content.

For example:

REG DELETE HKLMSoftwareSubkey /f

Be careful! Double-check all your commands before executing them. Even a tiny mistake can destroy your system!

These are the ways to restore your backups in case something goes wrong:

Restore your backup files:

  1. Start menu -> Type regedit.exe -> Enter -> Registry Editor -> File
  2. Import -> Find your backup location -> Choose the backup file -> Open

Restore your system:

Start menu -> Type Create a restore point -> Select Create a restore point -> Choose System Restore

10. Disable a Proxy Server

80001fff Remote Play Mac

Try disabling your proxy in order to fix the 0x8000ffff issue:

  1. Windows + R -> Type inetcpl.cpl -> Enter -> Connections tab -> LAN settings
  2. Uncheck ‘Use proxy server for your LAN’ -> Ok -> Apply -> Ok

Test your Windows Store to check whether it is OK or not.

11. Create a New User

If things have not worked out well yet, consider creating a new user account on your computer:

80001fff Remote Play

  1. Windows Key + X -> Command Prompt (Admin) -> type the following commands:
    net user /add [username] [password]
    net localgroup administrators [username] /add
    Note: Choose a new username for [username] and a new password for [password].
  2. Reboot your computer and log in as a new user.
  3. Retrieve your previous user data from c:usersprevious-user-name.
  4. Windows Key + X -> Command Prompt (Admin) -> Type shutdown /l /f -> Enter.

First, you will be logged off. Log in as a new user and proceed to your Windows Store app. It may ask you to use a Microsoft account. Use a new email address to sign in.

12. Run Windows Update Troubleshooter

If the Error 0x8000ffff keeps interfering with your updates, utilize Windows Update Troubleshooter. Download the file and run it by clicking on it. Then follow the simple instructions. This Microsoft solution can detect update issues and fix them automatically.

To some up, you can try these 12 tweaks one by one to fix Error 0x8000ffff on Windows 10:

  1. Check Your Computer for Malware Infection
  2. Tweak Your Drivers
  3. Set Correct Date & Time
  4. Boot in a Safe Mode with Networking
  5. Clear Windows Store Cache
  6. Reconfigure / Reinstall Windows Store
  7. Mend your System Files
  8. Switch to Administrator Account
  9. Edit Registry Entries
  10. Disable a Proxy Server
  11. Create a New User
  12. Run Windows Update Troubleshooter

13. Troubleshoot the issue using this tool

Mending faulty or outdated drivers can be quite a complicated issue. To tackle this challenge in a fast and simple way, try utilizing a special driver-updating tool. This tool is safe but effective. It definitely will help you in resolving the problem.

8000ffff Windows Update Error

We hope our tips have helped you resolve your ‘0x8000ffff’ drama.

8000ffff Error

Do you have any ideas or questions regarding this issue?

We are looking forward to your comments!