Opening ER_ Files

The ER_ file type is primarily associated with Winhelp Compressed File.

ER_	File extension: ER_
	File type:	Winhelp Compressed files

What is an ER_ file?

ER_ files mostly belong to Winhelp Compressed File. Use our "Online ER_ Text Viewer" below to analyze your ER_ file and to see all text it contains.

How can I open an ER_ file?

You need a suitable software like Winhelp Compressed File to open an ER_ file. You need a suitable software like Winhelp Compressed File to open an ER_ file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your ER_ file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a ER_ file directly in the browser:. Just drag the file onto this browser window and drop it.

Online ER_ Text Viewer

Choose your .er_ file to analyze

or drag and drop it here

Online File Viewer

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4 Steps to Open an Unknown .ER_ File

Because .ER_ files can originate from various programs, they aren't universally openable.

Identify the Source: If received from a developer, it may be a compressed error log. If found in legacy Windows systems, it often suggests a Winhelp Compressed File.
Check the Header: Open the file in a hex viewer to inspect its first bytes:
- MSCF or SZDD indicates a Microsoft compressed file.
- Plain text suggests a standard error log.
Use the Original Software: The original program is usually required; try Microsoft Expand, 7-Zip, or a Winhelp viewer, but ask the sender if uncertain.
Use this Webpage: Drag and drop your .ER_ file into our viewer to detect the format, extract readable text or metadata, and preview it.

Technical Data for ER_ File Extension

Related files:

er, ms_, rt_, cu_

an er_ Winhelp Compressed file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with ER_ files

Associate the ER_ file extension with the correct application.
Update your software that should actually open Winhelp Compressed files. Because only the current version supports the latest ER_ file format. Search, therefore, e.g. on the manufacturer website after an available Winhelp Compressed File update.
To make sure that your ER_ file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .ER_ file online - secure, fast, and no downloads needed.