Are all Windows 11 devices affected or only specific hardware?

Experts noted that the issues may indicate partial hardware compatibility problems introduced by the update, though cases remain individual rather than universal at this stage. The most thoroughly documented affected hardware includes Samsung Galaxy Book devices and Dell Precision workstations. Consumer PCs are primarily experiencing random restarts and Office freezes, while severe issues like inaccessible storage appear tied to specific hardware configurations.

Is it safe to install the update now, or should I wait?

If you haven't installed it yet, consider delaying until Microsoft issues a fix. You can temporarily pause updates via Windows Update settings. If your device is already running stably after installation, there is no need to roll back — the problems appear selective rather than universal.

Can files lost due to crashes be recovered?

Among documented cases, one user lost unsaved work after three consecutive system crashes following the update. To reduce future risk, enable AutoSave in Office and OneDrive. For files already lost, attempt recovery through Previous Versions (right-click the folder → Restore previous versions) if system restore points were active before the update.

What is error code 0x800704b3 and how can it be fixed?

Error code 0x800704b3 has appeared on certain devices after installing the update. This code typically points to network component or search indexer issues. The quickest fix: open Command Prompt as administrator and run netsh winsock reset followed by netsh int ip reset, then restart. If the problem persists, removing the update is the safest resolution.

Is this kind of update problem normal for Windows, or unusually severe?

Although Microsoft has not officially acknowledged a critical flaw in the update, technical support logs document multiple complaints tied to the current Windows 11 performance. Monthly security update problems are not historically rare — the February 2026 update also caused Bluetooth and Nvidia GPU issues. The recurring pattern suggests that security patches sometimes ship with system-level changes insufficiently tested across all hardware configurations. The standing recommendation: always create a restore point before installing major updates.

Windows 11 March 2026 Update KB5079473 Causes Crashes — Blue Screen of Death, Office Freezes, and How to Fix It

Windows 11 March 2026 Update KB5079473 Causes Unexpected Crashes — What's Happening and How to Protect Your PC

A number of Windows 11 users have reported unexpected issues after installing Microsoft's latest security update, with complaints ranging from system freezes and display failures to sudden restarts.

What Is This Update?

The update carries the identifier KB5079473 — the cumulative update for March 2026, released on March 10 for Windows 11 versions 24H2 and 25H2. It was designed primarily to strengthen security and introduce minor improvements, including better handling of Secure Boot certificates, improved File Explorer search reliability, and updates related to WDAC COM allowlisting.

The update bumps the system to build numbers 26100.8037 and 26200.8037.

Documented Problems

Some users reported difficulties running essential applications like Microsoft Office and Outlook, while others described failures in system tools such as Command Prompt and the Print Screen shortcut. Error code 0x800704b3 appeared on certain machines after the update was installed.

In more severe cases, storage volumes became inaccessible on some Samsung Galaxy Book devices, and graphics-acceleration-dependent applications failed on Dell Precision workstations. One user reported three consecutive full system crashes that forced manual reboots and resulted in lost unsaved work.

Screenshots circulating online show critical error messages including the Blue Screen of Death with the ATTEMPTED_WRITE_TO_READONLY_MEMORY code appearing under workload, causing file loss and disrupting essential software workflows.

What to Do If You're Affected

Experts advise affected users to temporarily pause updates via Windows Update settings, or remove the update if it has caused issues, and submit reports through the Feedback Hub tool to help Microsoft identify the root cause.

To uninstall: Settings → Windows Update → Update history → Uninstall updates → Find KB5079473 → Uninstall → Restart.