What is STEAMUI.DLL and how to fix it?

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Valve Corporation develops a file named SteamUI.dll. Valve verifies the program digitally and signs it. Verisign incorporation shall provide the signing authority for the DLL file. The program is part of the Windows platform and used by the Steam software. The level of the threat is 0.

SteamUI.dll is located at C:\Program Files\steam\steamui.dll. The file size depending on the records available is 8.2 megabytes. The known file version is The DLL file is confirmed as a non-system process that can be de-installed with malware from the system. The file does not affect the operating system and the performance of Windows.

You can see which CPU, memory, disk and network usage causes the SteamUI.dll module process in the Windows Task Manager.

How to check if STEAMUI.DLL malware is affected on your computer?

If your system is affected by STEAMUI.DLL malware, you will notice one or several of the symptoms below:

  1. STEAMUI.DLL occupies an unusually large CPU memory
  2. Erratic internet connection
  3. Your browser is bombarded with annoying popup ads
  4. Computer screen freezes
  5. PC’s processing speed suffers
  6. You are redirected to unknown websites

To pinpoint the virus file location, take the following steps:

Step 1: Press CTRL+ALT+DEL keys at once to open Task Manager.
Step 2: If you notice the file located outside C:\windows\system32 you should run an antivirus scan to get rid of the malware.

How to Fix STEAMUI.DLL Errors?

Step 1: Use Microsoft Register Server to manually register STEAMUI.DLL

When you install software that uses the STEAMUI.DLL dependency, the software should automatically register the file for you. In some cases your DLL file may not register properly, and as a result, will provide a “STEAMUI.DLL not registered” error. Fortunately, you can use a built-in utility called “Microsoft Register Server” (regsvr32.exe) to re-register your STEAMUI.DLL file.

How to re-register STEAMUI.DLL from a command prompt?

  1. Click the button Start.
  2. In the search box type “command “… and do not Hit ENTER!
  3. Hit ENTER by holding the CTRL-Shift keys.
  4. A permission dialog box will be prompted.
  5. Click Yes.
  6. Enter regsvr32/u STEAMUI.DLL, type the following command.
  7. Hit Enter to make the file UN-REGESTER.
  8. Type the command following: STEAMUI.DLL regsvr32/i.
  9. Hit ENTER, This will RE-REGISTER your file.
  10. Close the prompt window for command.
  11. Restart the STEAMUI.DLL error re-launched program.

Step 2: Remove or Restore the file STEAMUI.DLL from Recycle Bin

This may seem like an obvious or ridiculous step, but you may have accidentally deleted your STEAMUI.DLL. Therefore, it should be checked to see if your recycle bin is there.

  1. Just double-click on the bin icon for recycling.
  2. Look for STEAMUI.DLL in the upper right corner.
  3. If STEAMUI.DLL file appears in the search results, select it, and move it to the following directory:
    1. Windows 95/98/Me = C:\Windows\System32\
    2. Windows NT/2000 = C:\Windows\System32\
    3. Windows XP, Vista, 7, 8, 10 = C:\Windows\System32\
    4. 64-bit Windows = C:\Windows\System32\
    5. After moving your STEAMUI.DLL file, restart your computer.

Step 4: Drive your computer’s full malware scan

You are likely to experience a malware infection on your PC with your STEAMUI.DLL error. These intruders can damage DLL- related files, corrupt them, or remove them. In addition, the STEAMUI.DLL error that you experience might be related to a malicious program component itself.

Step 5: PC Driver updates

Fixed or updated device drivers may be linked to STEAMUI.DLL errors. Drivers can work one day and, for a variety of reasons, suddenly stop working the next day. The good news is that the device driver can often be updated to fix the DLL issue.

Searching for the exact driver for your hardware device, including directly from Microsoft or its affiliated manufacturers, may be extremely difficult. So, we recommend getting them fix through above steps.

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