Resolve Zlib1.dll Missing Error

Zlib1.dll – File Information

The zilb1.dll file is part of the zlib data compression library. The Zlib1.dll file is the official build of zlib as a DLL. Zlib1.dll is a free, general-purpose data compression library and can be used on nearly any operating system. The most common size of the zlib1.dll file is 80,954 bytes.

Is it safe to remove zlib1.dll?

It is better that you do not remove this file. Applications that require zlib1.dll may not work properly, if you remove zlib1.dll file from your computer.

Zlib1.dll – memory usage report

Zlib1.dll is not found to be a burden on your system resources. Zlib1.dll memory usage is small and is not known to be a deterrent to your system’s performance.

Zlib1.dll – Is it a safe file?

Yes, zlib1.dll is a safe file and is not recorded to be associated with any malware.

How to resolve zlib.dll missing error in Windows?

When you start the ePSXe application, you may receive one of the following error messages:

“The file zlib.dll is missing”


“The zlib.dll file not found”


“This application has failed to start because zlib1.dll was not found. Reinstalling the application may fix the problem”

The problem persists even after you reinstall ePSXe.

Cause of the Errors

Generally, the above errors occur due to a missing or damaged zlib1.dll file. In some cases, malware infection or registry issues may also cause a zlib1.dll missing error.

Resolution Steps

To resolve the zlib1.dll missing error, perform the following steps:

Download the zlib1.dll from Internet

If the error is occurring due to a missing zilb1.dll file, download a new copy of the zlib1.dll file from a reliable and trustworthy online free DLL Directory. Save the zlib1.dll file in your ePSXe folder or in the %system% folder.

Note: %system% is a variable that refers to the Windows System folder on your computer. By default, the path for Windows XP/Vista is C:\Windows\System32, for Windows NT/2000 the path is C:\Winnt\System32, and for Windows 95/ 98/ME the path is C:\Windows\System.

Perform a malware scan

If the above error persists, chances are that a malware infection is causing the zlib1.dll error. To repair the zlib1.dll missing error in this case, perform a malware scan on your entire computer using advanced and reliable security programs, such as STOPzilla Antivirus and Spyware Cease.

Further, keep your security software up-to-date with the latest malware definitions and security updates to prevent any future malware infections.

Clean your registry

The zlib1.dll error could also be due to a corrupt or damaged registry. To repair DLL errors occurring due to registry issues, scan your registry using a top-rated registry cleaner, such as RegServe. It is an excellent tool that enables you to perform deep registry scans and removes all the incorrect, invalid, and corrupt registry entries.