Welcome To The Party, Pal!— John McClane, Die Hard (1988)

Every second Tuesday, Microsoft drops its monthly batch of security patches — and sometimes, the cure is worse than the disease. Broken printers, BSOD loops, failed authentications, and zero-days are just some of the wreckage left behind.

PatchBoy tracks the fallout so you don't have to. A few days after each Patch Tuesday, we publish a report of real-world issues surfacing across Reddit, BleepingComputer, and beyond — and we keep updating it as the dust settles.

Monthly Fallout Reports

June 2026

A staggering 200 vulnerabilities and a massive Secure Boot certificate rotation (KB5094126) triggering endless BitLocker recovery loops and Broadcom/VMware hypervisor lockouts.

Severe Damage
Read Report
May 2026

118 vulnerabilities and the end of a multi-year zero-day streak. However, the peace was shattered by Nightmare-Eclipse dropping BitLocker and Kernel bypasses within hours of the patch release.

High Damage
Read Report
April 2026

A massive volume of 147 vulnerabilities and 3 zero-days. Forced RPC protocol hardening is already triggering "Access Denied" errors across legacy print and scan environments.

Severe Damage
Read Report
March 2026

83 vulnerabilities and 2 zero-days. KB5079102 is already causing printer havoc in the wasteland, while a Kernel elevation of privilege bypass is seeing active exploitation in the wild.

Moderate Damage
Read Report
February 2026

58 vulnerabilities but 6 actively exploited zero-days — highest in years. A nation-state bypass chain plus KB5077181 boot loops on Dell/Alienware. Classic Microsoft: fix one boot bug, ship another.

Severe Damage
Read Report
January 2026

114 vulnerabilities, a DWM zero-day in the wild, and KB5074109 delivering boot loops, Outlook freezes, and GPU glitches. TWO emergency OOB patches required.

Severe Damage
Read Report
December 2025

57 vulnerabilities, a Cloud Files zero-day exploited in wild, and a security fix that broke MSMQ enterprise messaging. Nothing says Happy Holidays like queue failures.

Moderate Damage
Read Report
November 2025

63 vulnerabilities, Windows Kernel zero-day exploited in the wild, laptop sleep/wake freezes, and the first Patch Tuesday where Windows 10 costs extra.

Moderate Damage
Read Report
October 2025

172 vulnerabilities, 3 zero-days actively exploited, Windows 10 end of life, and KB5066835 murdering localhost HTTP/2 for every developer on the planet.

Severe Damage
Read Report
September 2025

81 vulnerabilities, SMB relay zero-day, KB5065426 refusing to install, DRM shattered, and Active Directory losing its mind mid-month.

Severe Damage
Read Report
August 2025

107 flaws, a Kerberos zero-day, and graphics RCEs that need no user click. Brace for impact.

High Damage
Read Report
July 2025

128 vulnerabilities including a zero-day and a PoC exploit. DHCP crashes and print spooler nightmares followed.

High Damage
Read Report
June 2025

Ordnance incoming. Danger close. June's patch drop left a trail of wreckage across enterprise systems.

Severe
Read Report
May 2025

Five zero-days actively exploited in the wild. SharePoint chaos loomed large for admins.

High Damage
Read Report
April 2025

Edge crashes and Explorer freezes hit hard. A rough month for anyone who clicked the update button too fast.

Moderate
Read Report
March 2025

Windows 11 KB5036721 caused widespread BSODs on enterprise systems. The wasteland was not kind.

High Damage
Read Report
February 2025

Authentication failures and update loops wreaked havoc across organizations running Active Directory.

Moderate
Read Report
January 2025

159 vulnerabilities and 8 zero-days. Hyper-V chaos unleashed. A brutal start to the year.

High Damage
Read Report

Frequently Asked Questions

What is Patch Tuesday Fallout?
Every second Tuesday of the month, Microsoft releases security and quality updates for Windows and related products. While most updates go smoothly, some cause unexpected problems — broken printers, crashed services, failed logins, and worse. This site tracks those real-world issues so IT professionals and home users alike can make informed decisions about when and how to update.
How does the report work?
A few days after each Patch Tuesday, we publish an initial report based on community feedback from places like Reddit's r/sysadmin, BleepingComputer, and Microsoft's own support channels. We then update the report at the 72-hour and two-week marks as the picture becomes clearer — including any out-of-band fixes Microsoft releases.
Isn't this info available elsewhere?
It is — and PatchBoy is the first to admit it. The goal here is to pull it all together in one place with consistent formatting, direct links to sources, and a timeline view so you can track how issues evolve over the weeks following each release.
Are you claiming credit for discovering these issues?
Absolutely not. PatchBoy stands on the shoulders of giants — the researchers, sysadmins, and journalists who surface these issues first. Every report links back to original sources. We're aggregators and translators, not discoverers.
Should I delay installing updates based on this site?
That's ultimately your call and depends on your environment. Home users generally benefit from patching promptly. IT professionals managing large deployments often wait a week or two to see if issues emerge — which is exactly what this site helps you assess. Always weigh the security risk of not patching against the operational risk of a problematic update.