A daily updated filename extension database!

LAC file extension

The table below provides useful information about the .lac file extension. It answers questions such as:

  • What is the .lac file?
  • What program do I need to open a .lac file?
  • How can the .lac file be opened, edited or printed?
  • How can I convert .lac files to another format?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Cognos Local Authentication Cache

LAC file is a Cognos Local Authentication Cache. Cognos is a world leader in Business Intelligence solutions that improve and direct corporate performance. Cognos can use LAC file if LDAP server is not available and you want to connect to a previous connected cube.
Category: Data files
Application: Cognos
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
LAC aliases:
LAC related links:
LAC related extensions:
Cognos Model File

Cognos Cube File

Cognos Framework Manager Project

IBM Cognos Data

IBM Cognos Local Authentication Export

Other types of files may also use the .lac file extension.

🚫 The .lac file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

ac, las, oac, lzc, lwc, lc, lav, laf, la, alc, pac, mac, lxc, lca, lax

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

GNU Autoconf Input File
CaseWare Working Papers Client File
Light-O-Rama Animation Sequence
Log ASCII Standard
Lidar Data Exchange Format File
Legacy Charting Chart Document
L0phtCrack Password Database
Microth InPad Layout File
UltraEdit Macro
Linux Containers Configuration

🔴 Can't open a .lac 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 cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .lac file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .lac file extension, write to us!

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