CRL file format description

Many people often share .crl files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .crl files. To address this issue, we have created this page to offer assistance and guidance on handling .crl files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .crl files.

Our aim is to simplify the process and promote seamless use of the .crl file format.

1 filename extension(s) found in our database.

.crl - Certificate Revocation List

The CRL data files are related to Microsoft IIS. The CRL file is a Certificate Revocation List. A CRL is a list that is maintained by a Certificate Authority (CA) and records the serial numbers of certificates that have been revoked.

Microsoft IIS
Data files
- / -
Certificate Revocation List related extensions:
Snowboy Personal Model Data
Vixen ColorGradient Library
PreFlight Location Database
Microsoft Word Input Filter
FXpansion Uninstall Script
Learning Score Zipped Data

Naturally, other applications may also use the .crl file extension. Even harmful programs can create .crl files. Be especially cautious with .crl files coming from an unknown source!

Can't open a .crl file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .crl file extension is often given incorrectly!

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. By providing this list, we aim to assist users in finding the correct information more easily and improving their overall search experience on our site.

These misspellings were the most common in the past year:

cdl, cel, cfl, cgl, cl, clr, cr, cr1, cri, crm, cro, crp, ctl, drl, frl

Is it possible that the filename extension is misspelled?

There is a possibility that the .crl filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .crl:

Concordance Markup Data
Circuit Description Language Data
IMVU Product Data
WinMX Color Scheme
Cities: Skylines Colossal Raw Asset Package
Altium Binary Drill Data

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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