7 Best PST Repair Tools to Fix Corrupt Outlook PST Files (2026)
A corrupt PST file can lock you out of years of email, contacts and calendar history. The good news is that plenty of Outlook errors that look like corruption aren’t corruption at all, and many real cases clear up with Microsoft’s free Inbox…
Unknown USB Device (Device Descriptor Request Failed): Fixed
“Unknown USB Device (Device Descriptor Request Failed)” appears in Device Manager when Windows fails to complete the USB enumeration process for a connected device. The error can show for a USB flash drive, an external hard drive, a keyboard,…
The Request Could Not Be Performed Because of an I/O Device Error: Fixed
“The request could not be performed because of an I/O device error” is one of the most common — and least informative — error messages Windows produces. It means the operating system attempted to read or write to a storage device and the…
The Request Failed Due to a Fatal Device Hardware Error: 10 Fixes + Data Recovery Options
Quick fix summary If you’re seeing “the request failed due to a fatal device hardware error,” here’s the fastest path back to your data: The full breakdown below covers exactly why this happens, including a lesser-known variant of…
Fix: “We Found a Problem with Some Content Excel” Error
Quick fix summary If Excel just showed you the “We found a problem with some content Excel” error, here’s the fastest path back into your file: The full breakdown below covers why this happens and walks through each fix in order, in…
“fTPM/PSP NV Corrupted” Error: What to Press and Why
If you’re staring at this message on a black screen and don’t know whether pressing Y or N will save or destroy your data, this guide gives you the direct answer first, then the full explanation. The error appears exclusively on AMD-based…
Top PST Repair Tool for IT Professionals
Tool Best for Free tier File size limit CLI / batch Preview before save ScanPST.exe Minor header errors Yes, built-in ANSI 2GB (Outlook 2002 and earlier); Unicode up to 50GB (Outlook 2010+) -force/-silent/-rescan/-norepair, Outlook 2016 v1807+ only;…
What Causes PST File Corruption?
PST file corruption happens when Outlook’s data file gets damaged to the point where it can no longer be read properly. This can occur due to reasons like oversized files, sudden shutdowns, hard drive issues, malware, or network problems. When a…
What is a PST file? Everything you need to know
If you’ve used Microsoft Outlook for any length of time, you’ve probably run into a PST file — whether you meant to or not. It’s the file format quietly holding years of email, contacts, and calendar entries on your hard drive, and…
The Complete Guide to PST File Repair: Causes, Fixes, and Recovery
PST files are central to how Outlook works on Windows. They store emails, contacts, calendars, tasks, notes — basically everything that makes up a mailbox. For most users, the PST file is invisible. You install Outlook, you use it for years, the file…