Many remember old consoles, such as Nintendo, Sega mega drive, Sony PlayStation, etc with warm feelings. Emulators allow you to play old console games on the computer. For normal operation they need the library zlib1.dll that is responsible for unpacking and archiving. Without it you’ll get an error telling you that the file is missing zlib1.dll and offering to reinstall the application. But reinstalling the program will not help, because the problem is not in it. Moreover, the lack of library zlib1.dll can disrupt the operation of several applications on the computer.

Common causes of this problem:

  • Power failure while overwriting a file
  • zlib1.dll is at quarantine of antivirus
  • The library was deleted or changed by any application

If during rewriting zlib1.dll the computer’s suddenly shut down, the file could be damaged or recorded with an error. In this case, it can no longer perform its functions, it will have to be replaced. Sometimes the antivirus blocks the library for its activities. If the file zlib1.dll came in quarantine, you can simply restore it from there and add to exclusions. Sometimes the application changes the library itself, after which they stop working. In some cases, the program can remove zlib1.dll.

To restore a library is easy, you need to download it on your computer and place it in a special folder. Download zlib1.dll for Windows 7/8/10 from here. After that, find out the bitness of your operating system. To do this, click the right mouse button on “My computer” and select “Properties”. There, in the column “system Type” you will find its bitness. Go to the root directory of the Windows and put the dll in the SysWOW64 folder for x64 Windows, or in System32 if you have 32-bit system. Register and restart the computer. That’s all, the error will not appear.

Download zlib1.dll

  • OS Windows XP, Vista, 7, 8, 10
  • Bit 32/64bit
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