Missing sechost.dll

Question

Hi, 

After the last update for my PC (it was about 20:00 EEST) I tried to open Steam and I got this message: 

The code execution cannot proceed because C:\Windows\SYSTEM32\sechost.dll was not found. Reinstalling this program may fix this problem. When I try to open up Discord this happens again. Realise, i did not touched any file on my PC, I only got message in the settings that I need to restart my computer for updates and unexpectly I got this... Please help. I don't want to risk other of my PC files. I got in preinstalled ~4 weeks ago :(

Answer 1

Microsoft Windows [Version 10.0.18363.1256]

(c) 2019 Microsoft Corporation. All rights reserved.

C:\Windows\system32>DISM.exe /Online /Cleanup-image /Restorehealth

Deployment Image Servicing and Management tool

Version: 10.0.18362.1139

Image Version: 10.0.18363.1256

[=====================      37.3%                          ]

Error: 1392

The file or directory is corrupted and unreadable.

The DISM log file can be found at C:\Windows\Logs\DISM\dism.log

C:\Windows\system32>

C:\Windows\system32>sfc /scannow

Beginning system scan.  This process will take some time.

Beginning verification phase of system scan.

Verification 46% complete.

Windows Resource Protection could not perform the requested operation.

C:\Windows\system32>

C:\Windows\system32>

C:\Windows\system32>

===================

I tried to run these commands on cmd, because a saw that another person got the same problem and that's what I got

Answer 2

Good Day KalinKostov,

My name is Carlo, I'm an Independent Advisor and community member like you.

I am also using Windows 10 pc. Let us work together to sort this out.

Here's the steps you can try.

-Click Start, type CMD and run as administrator.

-Copy and paste this command below and hit enter.

regsvr32 sechost.dll

Restart once done if issue persist perform Repair Upgrade.

this will re-install the Windows without affecting your files, apps and settings it will repair and replace any corrupted system files.

Step 1: Download Media Creation Tool from Microsoft.

https://www.microsoft.com/en-us/software-downlo...

Step 2: Run MediaCreationTool.exe.

Step 3: Choose "Upgrade this PC now".

Step 4: Select "Keep personal files and apps".

Step 5: Let it install

I hope the information above helps. Please let me know how it goes.

Have a wonderful day ahead and stay safe.

With Warm Regards,

Carlo T.

Answer 3

Alright, about the first step 

Here's the steps you can try.

-Click Start, type CMD and run as administrator.

-Copy and paste this command below and hit enter.

regsvr32 sechost.dll

I got this message "The module "sechost.dll" was loaded but the entry-port DllREgister Server was not found. Make sure that "sechost.dll" is a valid DLL or OCX file and then try again. 

About the 2nd fix, when I try to open MediaCreation tool I got this error: C:\Windows\SYSTEM32\sechost.dll was not found. Reinstalling this program may fix this problem

Is there a way that the update can cause this :|

Answer 4

Also when I now go to the update page I got this: 

2021-01 Cumulative Update for Windows 10 Version 1909 for x64-based Systems (KB4598229) - Error 0x80073712

Status: Some update files are missing or have problems. We'll try to download the update again later. Error code: (0x80073712)

Answer 5

Greetings KalinKostov

I appreciate your time in getting back to this thread, if the steps did not work, no worries since this is an open forum, we can ask assistance from other community advisor about their feedback and suggestion with this issue. I will keep this thread open.

Have a wonderful day ahead and stay safe.

Sincerely,

Carlo T.