Missing QtDesigner4.dll error solution for Windows

Please read the instructions carefully before you download the QtDesigner4.dll.Take the proper steps to safely clean and repair windows errors.

1. Where should this file go? After you download QtDesigner4.dll on your machine, paste it in directory where it missing, and also copy it to

Windows 95, 98, ME C:\Windows\System
Windows NT, 2000 C:\WinNT\System32
Windows XP, Vista, 7, 8 C:\Windows\System32
64-bit Windows C:\Windows\System64

If you can't find windows directory try:
a. Press and hold Windows key on your keyboard, then press button R.
b. Enter the command "cmd" and press Enter
c. In a command window enter the command "set systemroot" and press Enter. It will display system directory.
2. Go to "start" ==> "run" and type "regsvr32 QtDesigner4.dll" to register the file to the system.

File Information
  • NameQtDesigner4.dll (QtDesigner4.dl_)
  • CategoryOperating System > dll
  • DescriptionGraphial user interface designer
  • FilenameQtDesigner4.zip
  • Filesize2.73 MB
  • Filetypezip (Mime Type: application/zip)
  • Rating 4.7 / 5 , 80 rating
  • MD5: ff0f0d210fa47e5251190e56cfbc05bb
  • SHA1: 19b54193dab88f87e29ede099152f80fede41407
  • SHA265: $5$rounds=5000$dlldownloadsyste$.RJNY5PJU4ZxXN1Il26uOE4pn6L9wq0ah0CpnyMzSt9

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All possible solutions

Got computer error message like:

"QtDesigner4.dll crash"
"bad image"
"error loading"
"QtDesigner4.dll was not found"
"the procedure entry point QtDesigner4.dll error"
"QtDesigner4.dll could not be located"
"Access Violation"
"Cannot register QtDesigner4.dll"

at startup or shutdown or run program?
No "missing dll" anymore - Repair dll errors - How to fix windows dll corrupt on your windows xp,vista,2000/2003,win7, win8,win10

  • Download and install QtDesigner4.dll.
  • Download and install the latest update.
  • Install windows updates automatically/regularly, allow Windows check updates in the background.
  • Reinstall the application.