TLDR: A Windows security update released on November 10, 2026 is causing Sage 50 to crash. Sage says the only known fix is to uninstall the update, and Microsoft has not given a timeline for a fix. Uninstall the updates listed below for your version of Windows, then pause Windows Updates through at least November 30, 2026.
Last updated: November 13, 2026
On November 10, 2026, Microsoft released a security update that causes Sage 50 to crash. Sage has published a Knowledgebase article on the problem, titled "Crashing after installing Windows updates". Sage created the article on November 11 and last modified it on November 13. The article may change again, so check it for the latest information.
Note: Sage's article is not consistent about one Windows 10 number. Part of the article lists KB5121096, while the resolution steps list KB5131096. Compare the list above with Sage's article before you uninstall anything.
Do not install them if you rely on Sage 50. Pause Windows Updates through at least November 30, 2026, and then check Sage's article before you resume updates.
If printing stops working after you uninstall the updates, remove the printer and add it again.
If Windows says an update cannot be uninstalled, Sage suggests a System Recovery rollback or reverting to an earlier version of Windows. Contact your IT provider or Microsoft support before you attempt either one.
If your computers are managed by an IT provider, ask them to hold these updates across every computer in your office. Pausing updates on one computer does not protect the others.
Sage traces the crashes to a security update that Microsoft released on November 10, 2026. The exact KB number depends on your version of Windows, so use the list above.
Uninstalling a security update removes its protections, so treat the removal as temporary. Pause updates only as long as you need to, and install the corrected update when Sage and Microsoft confirm a fix.
Sage recommends pausing through at least November 30, 2026. Check Sage's article before you resume, because Microsoft has not given a timeline for a fix.
Some updates are marked as required, and Windows will not remove them through the normal controls. Sage recommends a System Recovery rollback or reverting to an earlier version of Windows in that case, and suggests contacting your IT group or Microsoft support first.
Remove the printer and add it again, as Sage recommends.
Yes. Nothing in Sage's guidance points to data loss, but a fresh backup is a sensible precaution before you change your system.
Need help uninstalling the updates or keeping them from coming back? Contact PC Methods at 630-208-8000 or peter.heinicke@pcmethods.com.