What is rttfsfilt?

The genuine rttfsfilt.sys file is a software component of Acronis Disk Director Suite by Acronis.
Rttfsfilt.sys is a filter driver the belongs to the Acronis Disk Director Suite, a collection of data management programs that include disk partitioning, recovery, and disk cloning software. A filter driver is a software program that adds functionality to peripheral devices. It can even add support for a specialized device in the computer. This driver is an important component of the Acronis Disk Director Suite. Removing it may cause the program to malfunction. The Acronis Disk Director Suite provides users with tools that protect data and optimize disk usage. These programs can be used to create and manage disk partitions, recover deleted or lost data, shorten image backups time, diagnose problems with file systems, and improve overall system performance. Acronis International GmbH is a Swiss company that develops data protection solutions. The company primarily caters to small and medium-sized organizations and develops software for backup, disaster recovery, data access, and secure file sharing. Acronis was founded in 2003 and is currently headquartered in Schaffhausen, Switzerland.

RTTFSFilt stands for R-Tools Technology File System Filter

Rttfsfilt.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if rttfsfilt.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for rttfsfilt drivers in need of updating

Rttfsfilt.sys file information

The process known as R-TT File System Filter belongs to software R-TT FS Filter by Acronis (

Description: Rttfsfilt.sys is not essential for the Windows OS and causes relatively few problems. The rttfsfilt.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 28,640 bytes (54% of all occurrences) or 27,936 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. There is no file information. The program is not visible. The service has no detailed description. The file is not a Windows system file. Therefore the technical security rating is 44% dangerous.

Recommended: Identify rttfsfilt.sys related errors

Important: Some malware disguises itself as rttfsfilt.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the rttfsfilt.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


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Best practices for resolving rttfsfilt issues

A clean and tidy computer is the key requirement for avoiding problems with rttfsfilt. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the rttfsfilt.sys process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

rttfsfilt.sys [all]