MODEMCSA.sys Informations - Download and Fix

Sometimes Windows system displays error messages regarding corrupted or missing MODEMCSA.sys files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent MODEMCSA.sys file can therefore effect in failed execution of the started process.

MODEMCSA.sys file Unimodem CSA Filter. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of MODEMCSA.sys related errors on your device. You can also download MODEMCSA.sys file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows Vista devices which will (most probably) allow you to solve the problem.

Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows Vista

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Fix MODEMCSA.sys errors

1 Information about MODEMCSA.sys file
2 Errors related to MODEMCSA.sys file
3 How to fix MODEMCSA.sys related errors?

3.1 Scanning for malicious software
3.2 System and driver update
3.3 System File Checker tool
3.4 System recovery

4 Download MODEMCSA.sys

4.1 List of MODEMCSA.sys file versions

File info

General information
Filename	MODEMCSA.sys
File extension	SYS
Description	Unimodem CSA Filter

Software
Program	Microsoft® Windows® Operating System
Author	Microsoft Corporation

Details
MIME type	application/octet-stream
File type	Driver
System	Windows NT 32-bit
Copyrights	© Microsoft Corporation. All rights reserved.
Character set	Unicode
Language cod	English (U.S.)

Most common MODEMCSA.sys file related problems

There are various types of errors related to MODEMCSA.sys file. MODEMCSA.sys file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to MODEMCSA.sys file. If you encounter one listed below (or similar), please consider the following suggestions.

MODEMCSA.sys is corrupted
MODEMCSA.sys cannot be located
Runtime Error - MODEMCSA.sys
MODEMCSA.sys file error
MODEMCSA.sys file cannot be loaded. Module was not found
cannot register MODEMCSA.sys file:
MODEMCSA.sys file could not be loaded
MODEMCSA.sys file doesn't exist

MODEMCSA.sys

Application could not be started because MODEMCSA.sys file is missing. Reinstall the application to solve the problem.

Problems related to MODEMCSA.sys can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing MODEMCSA.sys file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

How to fix MODEMCSA.sys errors in just few steps?

Remember, before taking any action related to system files perform a backup copy of your data!

MODEMCSA.sys file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with MODEMCSA.sys file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Installing relevant Microsoft Windows patches and updates may solve your problems related to MODEMCSA.sys file. Use dedicated Windows tool to perform the update.

Go to the Windows "Start" menu
Type "Windows Update" in the search field
Choose the appropriate software program (name may vary depending on your system version)
Check if your system is up to date. If any unapplied updates are listed, install them immediately.
After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of MODEMCSA.sys or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to MODEMCSA.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the MODEMCSA.sys file with properly working version. To use the tool:

Go to the Windows "Start" menu
Type "cmd" in the search field
Locate "Command Prompt" result – don't run it yet:
Click the right mouse button and select "Run as Administrator" option
Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Another approach is to restore system to previous state, before the MODEMCSA.sys file error occured. In order to restore your system, follow the instructions below

Go to the Windows "Start" menu
Type "System Restore" in the search field
Start the system restore tool – it's name may differ depending on version of the system
The application will guide you through the process – read the messages carefully
After the process has finished, restart your computer.

If all the above-mentioned methods failed and the MODEMCSA.sys file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace MODEMCSA.sys file

The last solution is to manually download and replace MODEMCSA.sys file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded MODEMCSA.sys file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of MODEMCSA.sys file example directory paths.

Windows 10: C:\Windows\System32\DriverStore\FileRepository\modemcsa.inf_x86_7c43b59877ab9717\
Windows 8.1: C:\Windows\System32\DriverStore\FileRepository\modemcsa.inf_x86_a00690000c0aab3c\
Windows 8: 1: C:\Windows\System32\DriverStore\FileRepository\modemcsa.inf_x86_a00690000c0aab3c\
Windows 7: ---
Windows Vista: ---
Windows Vista: ---

If the steps did not solve your MODEMCSA.sys file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename MODEMCSA.sys

System Windows 10

File size 18944 bytes

Date 2017-03-18

Download

File details
	MD5	5af4bf280858d4d3c883499c1fa49726
	SHA1	c935fe7e81a1bf2ae894607f0174502dd5091045
	SHA256	d7fe385e3b34e1318f4f0483ab14532de20a0e7c5c74ce17991884eb2d7d6d1c
	CRC32	8009221d
	Example file location	C:\Windows\System32\DriverStore\FileRepository\modemcsa.inf_x86_7c43b59877ab9717\

Filename MODEMCSA.sys

System Windows 8.1

File size 18432 bytes

Date 2014-11-21

Download

File details
	MD5	d4f9c23254338ad677400c4260d0cffe
	SHA1	dfa28bfcd6e9309aa2cc8b8459298fdf78f25c2c
	SHA256	eec6e10652bef6d5cf20a4c0a6b0b75a52005fe0469d276b2463a7ed823c70c9
	CRC32	6b3ef872
	Example file location	C:\Windows\System32\DriverStore\FileRepository\modemcsa.inf_x86_a00690000c0aab3c\

Filename MODEMCSA.sys

System Windows 8

File size 18432 bytes

Date 2012-07-26

Download

File details
	MD5	c2d0f4dc0c3cf21a650e2786494180b6
	SHA1	cf80c28b80007effd36b70a3bb395c625b050292
	SHA256	f9736ab75393aa59f570d69250e44b8fd890b5133f417c6c2386b03cd01d5d9e
	CRC32	8c90f764
	Example file location	1: C:\Windows\System32\DriverStore\FileRepository\modemcsa.inf_x86_a00690000c0aab3c\

Filename MODEMCSA.sys

System Windows 7

File size 24064 bytes

Date 2009-07-14

Download

File details
	MD5	e38aef079cd3bcfa19f2072a214f829d
	SHA1	52c6de2fabe9e39863bfa0f37ca4858be8a5624c
	SHA256	6704c851a6c86c1cccf35154657d221654d6f12fd8d6cbe299689c728d4ceef0
	CRC32	1e530c80
	Example file location	---

Filename MODEMCSA.sys

System Windows Vista

File size 24064 bytes

Date -0001-11-30

Download

File details
	MD5	8985460fd448348f7ac748460d0a1cf4
	SHA1	ea81341282bee2ed2791d18e39a5151d96c2a467
	SHA256	c7a9c71b01c36efe44a598bee6c094edf67b45fe87c7e6947d058a94c14cce38
	CRC32	4973426f
	Example file location	---

Filename MODEMCSA.sys

System Windows Vista

File size 24064 bytes

Date 2006-11-02

Download

File details
	MD5	ed38df9580f53447200ce81e6d41c32a
	SHA1	cac29447d1047017e50e4e0317ec7898cc279333
	SHA256	42d08a6c766fb8d2fc922327f3398a6f8fe82cc44600ed3f34ef8ca7c112870a
	CRC32	12fcdf2f
	Example file location	---