FileFix is a free knowledge base that helps everyday users and IT pros diagnose and fix file and system errors across Windows, macOS, Linux, email and the cloud, clearly and without the jargon.
Error messages are stressful. A cryptic code like 0x80070057 tells you something is wrong but rarely what to do about it. Since 2016, FileFix has had one goal, to turn confusing file and system errors into clear, verified, step by step fixes that anyone can follow.
We focus on the things that actually break. The file systems your data lives on, the email files and clients you rely on, and the recovery and security work that gets your data back. Every solution is researched, tested and reviewed before it is published, and it stays free for everyone.
FileFix is led by Neeraj Singh, who brings more than 19 years of hands on experience with file systems and the data they hold. His work spans Windows, macOS and Linux file systems, email files and clients like Outlook and Thunderbird, data recovery, digital forensics and cloud storage. He guides the research team and reviews the fixes published here, so every guide stays tested, accurate and safe to follow.
Behind every fix is a team of specialists. Each owns a part of the stack, from Windows and BitLocker to macOS, Linux, email, data recovery, forensics and the cloud.
NTFS, updates, activation, TPM and BitLocker, plus recovering data from failing drives.
APFS, HFS+ and ext4 file systems, and PST, OST and MBOX repair for Outlook and Thunderbird.
Digital forensics, data integrity and sync, storage and permission errors in the cloud.
A look at the team behind the guides. We work hands on with the same systems you do and test every fix on real hardware before it reaches you.
FileFix goes deep on the systems that store and move your data. Our specialists work across every major platform and the file formats in between.
NTFS, FAT32, exFAT and ReFS, plus the Windows update, install and activation errors that come with them.
APFS and HFS+ issues, permissions, disk and Time Machine errors on Mac.
ext4, Btrfs and XFS, plus mount, permission and partition problems across distributions and servers.
PST, OST and MBOX repair for Outlook, Thunderbird and more, including corruption and import errors.
Getting data back from failing drives, deleted partitions and corrupt volumes, with care for integrity.
Sync, storage and permission errors across cloud drives and server file systems.
Behind every guide is a team of specialists who research, reproduce and test each fix before it reaches you.
We gather real error reports from users, vendor documentation, forums and our own labs.
Our specialists recreate the error on real systems and test every step until it works.
Each fix is reviewed for accuracy and safety, so nothing risky or unverified gets published.
We revisit guides as Windows, macOS and Linux change, so the steps still match what you see.
Search an error code or message, browse by category and open the fix. Each guide explains what the error means, what causes it and the exact steps to resolve it, newest and most helpful first.
We are always glad to meet people who love solving hard technical problems. If you work in file systems, data recovery, forensics or cloud and want to research and test fixes with us, reach out through our contact page.
Cannot find your error? Submit it and we will add a verified fix. Want updates and to save fixes for later? Become a free member.
