Windows 10: catroot in system32 what is that?

So i recently went through my system32 and saw 2 folders named catroot and catroot2.

Is it from Windows or is it a virus?

:)

 

SLI with different cards

Here is what is did
step 1:





step 2:





:/ i dont get this doe ?

okay ive done the same thing as you but i cant put the file back into the folder

• Copy nvlddmkm.sys in C:\Windows\System32\DriverStore\nv_dispi.inf_amd64_5518e59e8d3b48f4\ to C:\Windows\System32\drivers\ and replace the existing one.

that thing

 

Direct x installation error A cabinet file necessary for installation cannot be trusted. Please verify the Cryptographic Services are enabled and the cabinet file is valid

Hi,

Thanks for the update and response.

As the Windows 10 operating system comes with the latest version of the Direct X version there is no need of installing separate Direct X.

To check about the Direct X version follow the below steps and check if it helps.

• Press Windows key + R for Run.
• Type dxdiag and then Enter.
• Under System tab check the Direct X version.

If you still find issues follow the below steps.

Rename the Catroot2 folder

To rename the Catroot2 folder, follow these steps:

• In Search Bar, type cmd, and then click OK.
• At the command prompt, type the following commands, and then press Enter after each line:
  

net stop cryptsvc

ren %systemroot%\System32\Catroot2 oldcatroot2

net start cryptsvc

exit

• Remove all tmp*.cat files from the following folder:

%systemroot%\system32\CatRoot\{F750E6C3-38EE-11D1-85E5-00C04FC295EE}

Note If no files that start with "tmp" exist in this folder, do not remove any other files. The .cat files in this folder are necessary for installing hotfixes and service packs.

Important Do not rename the Catroot folder. The Catroot2 folder is automatically recreated by Windows, but the Catroot folder is not recreated if the Catroot folder is renamed.

Disclaimer: Making changes in the system files completely depends upon the user and Microsft is not responsible for any kind of Data loss or system corruption.

Hope this information is helpful. Please do let us know if you need further assistance, we’ll be glad to assist you.

 

Win10XPE - Build Your Own Rescue Media

An interesting tool to extract used *.cat signature files from the CatRoot folder.
It's in Chinese, I don't understand the checkboxes but with the default choices it does its job and Offline.





It should allow to complete Catalog_AddFiles.txt with a new section, to reduce the size of the catroot folder
Code:

instead of All Catalog
Code:

How to:
Make a full build with all the components and all Catalog
Open CertFile CertFilex64.exe and Select the Target Windows Folder. Select the 4 folders (Windows, System32, Drivers and DriverStore).Run it to get a streamlined catroot sub-folder
Extract the *cat files from \Temp\winre.wim (\Windows\System32\CatRoot\{F750E6C3-38EE-11D1-85E5-00C04FC295EE}\) in another catroot folder
Compare (BeyondCompare here) the 2 folders, select the orphans of the certfile catroot folder then copy the name of the files
Then, you only have to rework the list manually, ex:
Code:

to
Code: