Fix Startupchecklibrary.dll ERROR & Winscomrssv.dll ERROR

Have you ever received any error messages on your Windows systems like Startupchecklibrary.dll ERROR or Winscomrssv.dll ERROR? If yes, then don’t worry. Here we will get you covered by sharing the possible steps to fix these issues completely. Basically, the DLL (Dynamic Link Library) is a set of programs that runs on different Windows programs to keep working the games or applications smoothly.

But it’s very common these days to easily get missing or corrupt for the DLL files on Windows 10. So, if in case, somehow any of these mentioned DLL files get missing or corrupted, then you can easily get back them working again. But if you’re not gonna fix these DLL errors, they will appear most of the time and plenty of programs also get affected.

Fix Startupchecklibrary.dll ERROR & Winscomrssv.dll ERROR

Most of the Windows 10 users may find the DLL files under the quarantined section of Windows Defender or any installed third-party antivirus program. That means the security programs can see and measure it like a virus or threat against the Windows system in most cases.

So, you may ask how to fix this issue. Well, here we’ve provided very simple step-by-step methods below that you need to follow completely. Now, without wasting any more time, let’s get into it.

  1. First of all, you will need to download the official Autoruns for Windows (v13.98 or higher).
  2. Extract the zip file on your PC and simply install it as an administrator by right-clicking on the executable file (Autorun.exe).
  3. Once installed, you will need to launch the Autorun tool.
  4. Next, the tool will automatically load all the files > Then search for the Startupchecklibrary and Winscomrssv lines and delete it.
  5. Right-click on the Adobe Type Manager (File not found: atmfd.dll) > Select Delete > Confirm Delete by clicking on Yes.
  6. Then you should find another error that’s File not found: winlogui.exe -> Right-click on it and select Delete > Confirm Delete by clicking on Yes.
  7. Make sure to do the same method for all of the startup errors like Startupchecklibrary and Winscomrssv.
  8. Once done, restart your computer. You’re good to go.
  9. Additionally, you can also go to the Windows Defender or any third-party antivirus program (whichever you use) > Head over to the “Protection History” or “Quarantine Threats” > Remove or Allow the DLL file (if any).
  10. Perform SFC (System File Checker) scan on your PC to search for missing DLL files. Press Windows key or click on Start menu > Type CMD > Right-click on the Command Prompt and select Run as administrator > If prompted, click on Yes > Type sfc/scannow and press Enter. Wait for a couple of minutes and once done, restart your PC.
  11. Manually download and paste the missing or corrupted DLL file from online. There are various websites that offer free DLL files to download. You can also use premium sites to purchase DLL files if you want.
  12. If in case, recently you’ve updated your Windows 10 OS version or any cumulative update then make sure to roll back to the previous Windows version. Sometimes, the new patch or security update can cause these kinds of issues. Click on Start > Settings > Update & Security > View Update History > Uninstall Updates > Choose the recently updated version > Click on Uninstall and wait for the process to complete. Once done, restart your computer and then check for the DLL file error again. However, if you think that you will use the latest Windows version, then head over to the official Microsoft site and manually download the standalone Windows 10 package then install it.

That’s it, guys. We assume this guide was pretty useful to you. Feel free to ask in the comment below for further queries.


  1. Hello Subodh!

    Thank you for your explanations, but I still have a doubt because in other sites I have read that the file «atmf.dll» should not be deleted because it is part of Windows (my OS is Win10).

    The point is that while enabling autorun I found an entry under tab “Drivers” as follows:

    HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Font Drivers

    Then the second line below is CHECKED and reads as follows:

    Adobe Type Manager >>>>>> File not found: atmfd.dll

    It looks like this is a conflict related to one of the Adobe Fonts loaded in the PC, but I am not sure. I am inclined to think I could uncheck that entry but took no action until I am sure of what I am doing.

    What is your view about this issue?

    Thank you in advance

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