FIX: Corrupted CNBJ2530.DPB File in Windows 8/8.1

By Kevin ArrowsUpdated on April 30, 2023

Kevin is a certified Network Engineer

Back in late 2014, a lot of users running Windows 8/8.1 started suffering from a corruption of the CNBJ2530.DPB file located in a specific directory of their computers’ C drives. This corruption, most common in computers that have AMD GPUs, causes a horde of different problems, usually affecting the graphics display. A corrupt CNBJ2530.DPB file can be caused by any of a half a dozen issues – ranging from sudden computer shutdowns to malware – which is why pinpointing the exact cause of this issue in any given case is pretty hard.

In addition, a corrupt CNBJ2530.DPB file can also not be diagnosed with symptoms alone as you need concrete evidence that your computer’s CNBJ2530.DPB file is corrupt in order to be able to apply the right fix for the issue. Thankfully, though, if you do know that your computer has a corrupt CNBJ2530.DPB file, you can resolve the issue pretty easily.

How to determine whether or not you are affected by this issue

To determine whether or not your computer is affected by a corruption of the CNBJ2530.DPB file, you need to first:

Press the Windows Key + X while on your Desktop to open the WinX Menu. Click on Command Prompt (Admin) to open an elevated Command Prompt. Once the elevated Command Prompt opens up, type the following into it and press Enter:

sfc /scannow

Allow the SFC scan to be completed successfully. This may take as long as 15-20 minutes.

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The System File Checker (SFC) scan is a scan designed to detect and repair system files and components. . Once a SFC scan is completed, a log of the entire scan – a file that contains all of the corruptions that the scan found – is created. This log, however, is in machine language. To translate this log into plain English so that you can interpret it and determine whether or not your computer’s CNBJ2530.DPB file is corrupted, you need to:

Click here to download the executable file for a program known as SFCFix.

Move the downloaded executable file to your Desktop.

Close all open programs.

Launch SFCFix from your Desktop by double-clicking on its executable file or right-clicking on it and selecting Open. Be sure to do so within a few minutes of the SFC scan you ran previously being completed.

When SFCFix launches, follow all of the program’s onscreen instructions and when it is done working its magic, it will create a completely comprehendible log file named txt on your Desktop. This log file will open automatically as soon as it is created by the program.

As soon as the log file opens up, start sifting through it, looking for a line similar to the following in particular:

CORRUPT:

C:\WINDOWS\winsxs\amd64_prncacla.inf_31bf3856ad364e35_6.2.9200.16430_none_fdce12188b615b12\Amd64\CNBJ2530.DPB

The directory in the above mentioned line may be different depending on the version of Windows 8/8.1 you are running – and so may be the strings of numbers – but the name of the file will definitely be the same. If the above mentioned line, or one that is extremely similar to it, appears somewhere in the log file created by SFCFix, your computer is definitely a victim of this problem.

How to fix a corruption of the CNBJ2530.DPB file

Once you know for sure that your computer is indeed suffering from a corruption of the CNBJ2530.DPB file, you can move onto repairing the corruption and ultimately fix the issue. The following are the two most effective solutions that can be used to resolve this problem:

Solution 1: Have SFCFix repair the corrupt CNBJ2530.DPB file

Soon after this issue first came to light, the people behind the SFCFix program (sysnative) updated it, adding to it the ability to successfully repair a corrupted CNBJ2530.DPB file and resolve this issue for good. If you want to use SFCFix to repair your computer’s corrupt CNBJ2530.DPB file and get rid of this issue, you need to:

Run a SFC Scan – instructions for which can be found in the How to determine whether or not you are affected by this issue

Click here to download SFCFix, save it to your Desktop and launch it once it has been downloaded.

Follow the onscreen instructions and let SFCFix do its thing.

When SFCFix is done, it will create and automatically open a log file. Search this log file for something along the lines of the following:

AutoAnalysis:

FIXED: Performed DISM repair on file Amd64\CNBJ2530.DPB of version 6.3.9600.16384.

The version of the CNBJ2530.DPB file in the lines above may change depending on various factors such as the version of Windows 8/8.1 you are running, but if you see something similar to the abovementioned line in the log file, SFCFix was successful in resolving this issue for you.

CNBJ2530 Repair

Solution 2: Fix the issue by running the DISM Manually

The Deployment Image Servicing and Management (DISM) utility is a utility that comes built-in with all versions of the Windows Operating System and is designed to service and repair any given copy of the Windows OS. If you are one of those people who would rather deploy a fix to an issue yourself than have a program do all the legwork for you, you can use this solution to repair your computer’s CNBJ2530.DPB file and solve this problem. However, this solution only works on computers that are connected to the internet.

The DISM utility simply scans all of your computer’s system files for corruptions and then repairs any and all corrupt files using exact copies of them from Microsoft servers. To fix this issue using this solution, you need to:

Press the Windows Logo key + X while on your Desktop to open the WinX Menu.

Click on Command Prompt (Admin) to launch an elevated Command Prompt.

Type the following into the elevated Command Prompt and press Enter:

DISM.exe /Online /Cleanup-image /Restorehealth

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Once the DISM utility is done performing the repairs, which can take up to 20 minutes, type the following into the elevated Command Prompt and then press Enter:

sfc /scannow

Wait approximately another 20 minutes for the SFC scan to be completed, and if DISM was indeed successful at repairing the DPB file and resolving the problem, the scan will state that no integrity violations were found once it has been completed.

Comments

Barış Seyhan Jun 10, 2019

thank you bro

ワニ

ワニノコ Jul 15, 2019

Stage 1 of 6 failed on server…

Is this a bad condition?

Shane Warren Author Sep 10, 2019

I’m sorry, is the “Stage 1 of 6 failed on Server” the error? If so, open Command Prompt with administrative privileges and type in “net start trustedinstaller” and press “Enter” then try and see if the solution works.

Kaye Alvarez Oct 14, 2020

Hi, I ran the SFCFix and it says it performed the repair on Amd64/CNBJ2530.DPB, no corruptions were detected, and it failed to generate a complete zip file. I used your tool because the sfc/scannow report I ran prior to using your tool said the following: Verify and Repair transaction
2020-10-14 14:35:05, Info CSI 000009e6 [SR] Cannot repair member file [l:36{18}]”Amd64CNBJ2530.DPB” of prncacla.inf, Version = 6.3.9600.17415, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type = [l:24{12}]”driverUpdate”, TypeName neutral, PublicKey neutral in the store, hash mismatchAny thoughts? Thanks!

Muhammad Zubyan Author Oct 15, 2020

Have you Tried DISM Repair commands? If you haven’t here are the DISM Repair Commands:-DISM /online /cleanup-image /checkhealthDISM /online /cleanup-image /restorehealthRun these commands one by one after that restart your computer if your problem is fixed, Great but if they don’t fix your problem and DISM and SFC are not working for you, you might consider doing a repair install of your Windows 8/8.1. Also, Make sure to make a backup of your file we won’t be responsible for the loss of your data. Hope this helps! Thank you.

Kaye Alvarez Oct 15, 2020

Hi! Thank you so much for responding. Before I contacted you, I ran the DISM checkhealth and it said everything was fine, so I didn’t take it further thinking the restorehealth wasn’t needed. Then, after I contacted you I did a bit more research and decided to run the DISM restorehealth and it did fix the issue. The SFC scan now says everything is fine. However, the core reason for my running all these tests is because I put fonts in my font folder… not realizing what a mess it would create. Upon restart, my fonts are squares and symbols. I found a temporary fix where I replace the fonts in my font folder with a font folder I found online. But I have to do that every time I restart. I was hoping when the amd64/cnb… file was fixed that it would remedy the font issue… but no. I still have that problem. Do you have any ideas? Thanks again!

Muhammad Zubyan Author Oct 16, 2020

There is something that you can try first of all try to change the Scale of your Windows for doing that1. Right-click on your desktop and select “Display settings”
2. Change the size of scaling try changing it to a different numberIf that fixes the font issue great but if it doesn’t try running “sfc/scannow” command again as it might catch this bug However if it doesn’t1. Head over to “C:WindowsFonts”
2. Click on “Font options”
3. Click “Restore Default Font settings”Hope this helps. Thanks!

Muhammad Zubyan Author Mar 22, 2021

Try this:-

1. Search for Command Prompt in the start menu.
2. Right-click on Command Prompt and run it as an administrator.
3. Type the following command “net start trustedinstaller”, Press enter.

Try the solution again and check if it works. If the issue still persists you can try resetting the font settings:-

1. Head over to “C:WindowsFonts”
2. Click on “Font options”
3. Click “Restore Default Font settings”

Hope this helps. Thanks!

How to determine whether or not you are affected by this issue

How to fix a corruption of the CNBJ2530.DPB file

Solution 1: Have SFCFix repair the corrupt CNBJ2530.DPB file

Solution 2: Fix the issue by running the DISM Manually

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