[cant watch videos after MS updated on 3/1 or 3/2 ?] answeared by MS tech support website

To resolve issues with watching videos after the Microsoft update on 3/1 or 3/2, follow these steps:
Install important updates KB2756872 and KB2768703: Go to Settings > Windows Update > Check for updates, then install all important updates. This fixes protected content playback errors [2].
-- my windows update showed :Youre up to date 3/4/2026 12pm. tried visit cctv.cn showed [transferring data from appms.app.cntv.cn] then got [网络开小差了，请稍后再试] same as (3/1-3/4) didnt improve at all.

ps searched [what is KB2756872 and KB2768703 when did it update?] ...essential updates for early versions of Windows 8. The "Date Published" of 7/15/2024 seen on Microsoft download pages
--cant find in my MS updated history at all. and very likely outdated answeared so i wont install or update both.

searched [my PC is 25H2 got cant watch videos should i install KB2756872 and KB2768703 to solve the problem?] No These are extremely outdated updates designed specifically for Windows 8 from 2012–2013. Installing them on Windows 11 (25H2) will not solve your video issue and may cause system instability.

Check and configure your audio driver: Ensure your audio driver is properly configured. If needed, delete the registry key
DisableProtectedAudioDG at
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionAudio
, then restart the audio service or your PC [2].

[how to delete [DisableProtectedAudioDG]?] Go to Sound Control Panel, select your speaker Properties, and on the Enhancements tab, check "Disable all enhancements".
-- Open Registry Editor: Press Windows Key + R, type regedit, and press Enter.
HKEY_LOCAL_MACHINE , SOFTWARE , Microsoft , Windows , CurrentVersion , then click Audio or [Copy and Paste: You can paste the full path (
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Audio
) into the address bar at the top of the Registry Editor and press Enter.]

.......................................................3/4/2026
PS control panel Sound Playback click Speakers cant find Enhancements tab, remember never select enhancement as the simple the best in usa. decide on line chat with MS tech support, now is 9 before me....
i have previous ticket number(ps on 2/18/2026). the case ticket number: 709xxx , same PC after 3/1/2026 MS updated cant watch any audio (didnt try youtube) when visited websites.

the worker demo how to solve it that casued by [track] issue. reason : it is third party application it wants us to disable tracking.

1. click on a small box icon at the top left screen of the browser as: click icon[ehanced tracking protection] and set OFF on the top 2nd line and left side of [lock logo ie Connection is Not Secure]
PS [Connection is Not Secure] inside click [more informations] [Permissions which auto set default cant be disabled even unclick and select always ask or allow or block wont be saved]

2. browser [settings , privacy and security must not select strick but standard] or [settings , ehanced tracking protection click manage exception add the websites you visited which i already added 360doc now any blank screen websites should add in here] PS i always use private browser and select strick never got the problem until 3/1/2026 MS updated.

baidu.com also need to disable enhanced tracking protection PS just turn on 360doc.com [enhanced tracking protection] no impact so far. will try other china websites hoping can reduce adv. especially malicious Google Chrome adv-like.

https://tv.cctv.com still blank screen but when i tried cctv-6 movie waiting for quite a while it showed up, problem solved? the difference it didnt show the lock Not secured after i cleared cookies and site data.

3/4/2026 searched [did we have to pay MS tech support for MS updated caused problem?] No, you generally do not have to pay for Microsoft technical support for problems caused by a Windows update, provided you use official Microsoft channels.
Here is a breakdown of the policy regarding paid support for update-related issues:
Free Support for Update Issues: While Microsoft charges for "advanced" or "premium" support, they typically provide free support for issues directly caused by their own updates, especially if they affect system stability or security.
How to Avoid Charges: If you contact Microsoft Support, explicitly state that your problem is related to a recent Windows update (and provide the KB number if possible). This often bypasses the standard, paid-support incident charge.
Warning on Scams: If you receive an unsolicited phone call or a pop-up window demanding payment to fix a Windows update, it is a scam. Official Microsoft support will not call you to ask for money to fix an update.
If You Are Charged: If you are charged for assistance with a broken update, you can investigate and request a refund via the "Manage your payments" page on the Microsoft account dashboard.
Exceptions (Windows 10 ESU): If you are using Windows 10 beyond its official end-of-support date (Oct 14, 2025), you may have to pay for "Extended Security Updates" (ESU) to continue receiving security fixes.
Best Course of Action:
Always start by using the built-in Windows Update Troubleshooter (Settings > Update & Security > Troubleshoot) to fix issues for free.

--3/4/2026 my suggest once you get ticket number (for free), better write down the date and ticket number that next time technician would find out your case to verify you and your PC information. my case if tech did help solve problems (cctv.com not yet 100% recover) i would give high score.

....................................... you can skip the below

or [Command Prompt/PowerShell: You can use the
reg query ,
command in Command Prompt or
Get-ItemProperty
in PowerShell to locate this path ]

Update your video driver: Use
dxdiag
to find your video card manufacturer and model, then download and install the latest Microsoft WHQL-certified video driver from the manufacturer’s website [2].

Install the Media Feature Pack (if using Windows 10/11 N versions): Add the Media Feature Pack via Settings > Apps > Optional Features > Add a feature, then restart your PC to restore media playback functionality [1].

ps tried to download by poster suggest got : wushowhide.diagcab was blocked because this type of file can harm your device.

searched [wushowhide.diagcab was blocked because this type of file can harm your device.?] The wushowhide.diagcab file is a legitimate Microsoft tool used to hide problematic Windows updates. It is blocked because browser security often flags
.diagcab (Cabinet) files as potentially dangerous. You can safely bypass this by clicking the three dots next to the download warning in Edge/Chrome and selecting "Keep".

How to Safely Download/Run wushowhide.diagcab
Edge/Chrome: When the block message appears, do not click discard. Instead, go to your downloads list, click the three dots (...) next to the file, and select Keep.

Confirm Action: You may need to click "Keep anyway" in a subsequent security prompt.

Run the Tool: Once saved, you can open the file, and it will run the Microsoft Troubleshooter.

If you downloaded this directly from a Microsoft-related source, it is safe to use. The blocking mechanism is a default security policy in Windows Attachment Manager.

Downloaded file "was blocked because this type of file can harm ...

Software, driver, and utility files hosted by Brother are safe to download and install to your computer. Download the file using a...

Brother USA

Hewlett-Packard - USB 49.0.4395.18315 update error. How do I hide ...

Oct 13, 2025 — "Show or Hide Updates Troubleshooter" - ... If you receive the This file can harm your device error, select Keep and then run ...

Microsoft Learn

HP Laptop Windows 10 blocks a Microsoft Diagcab WinSecurity.exe

Apr 27, 2025 — Since its a legit MS file, click the "Keep" option on the Downloads page in Edge. Run the tool and post the troubleshooting repor...
---------------------------------------3/7/2026 updated
3/7/2026 i already gave up cant watch CCTV any videos until found out whenever PC restarted (x PC) always auto popped cmd execute something, in the end showing: An error occurred - Microsoft-Windows-GroupPolicy-ClientTools-Package Error: 0x8007371b
Error: 14107
One or more required members of the transaction are not present.
The DISM log file can be found at C:\WINDOWS\Logs\DISM\dism.log
Deployment Image Servicing and Management tool
Version: 10.0.26100.5074
Image Version: 10.0.26200.7922
Processing 1 of 1 - Adding pkage Microsoft-Windows-GroupPolicy-ClientTools-Package~31bf3856ad364e35~amd64~~10.0.26100.7705

yesterday (3/6/2026) did Google searched and followed suggestions failed. today spent serveral hours finally the error solved and restart PC verified CCTV.com the cant watch videos also solved. what i did as : 1. forced closed the auto popped cmd screen 2. searched [how to fix GroupPolicy-ClientTools-Package Error: 14107]
To fix the GroupPolicy-ClientTools-Package Error 14107 (often 0x8007371b, "One or more required members of the transaction are not present") when enabling gpedit.msc on Windows Home, you must manually install the required packages using DISM in Command Prompt as Administrator, as direct installation attempts often fail
Steps to Fix Error 14107:
Open Command Prompt as Administrator: Press Win + S, type cmd, right-click "Command Prompt" and select Run as administrrator.
Run DISM Package Installation Commands: Copy and paste the following commands one by one, pressing Enter after each, to install the necessary, missing, or corrupt Group Policy files:
1. FOR %F IN ("%SystemRoot%\servicing\Packages\Microsoft-Windows-GroupPolicy-ClientTools-Package~*.mum") DO (DISM /Online /NoRestart /Add-Package:"%F") PS my case : C:\Users\user-name>(DISM /Online /NoRestart /Add-Package:"C:\WINDOWS\servicing\Packages\Microsoft-Windows-GroupPolicy-ClientTools-Package~31bf3856ad364e35~amd64~en-US~10.0.26100.7705.mum" ) until showing [=======================100.0%======================]
The operation completed successfully.

2. FOR %F IN ("%SystemRoot%\servicing\Packages\Microsoft-Windows-GroupPolicy-ClientExtensions-Package~*.mum") DO (DISM /Online /NoRestart /Add-Package:"%F") PS my case : C:\Users\user-name>(DISM....)

PS the 2 files *.num in file explorer this pc click windows-ssd(c:) [windows , servicing , packages , Microsoft-Windows-GroupPolicy-ClientTools-Package*.num
Microsoft-Windows-GroupPolicy-ClientTools-Package~31bf3856ad364e35~amd64~en-US~10.0.26100.7920.mum

they are not same file folders as [%SystemRoot%\servicing\Packages\] which cant see.
3. Restart Your Computer: Once the operations complete, restart your PC to apply the changes.
4.Verify: Press Win + R, type gpedit.msc, and press Enter to verify the Group Policy Editor opens.

PS i am not 100% sure whether the [An error occurred - Microsoft-Windows-GroupPolicy-ClientTools-Package Error: 0x8007371b Error: 14107] problem solved so can watch CCTV videos.