Microsoft · Windows 11 security update
Report your KB5121003 install result
Share whether KB5121003 installed cleanly or caused a problem. Updatehey aggregates reports without publishing personal profiles.
How reports are used
Reports are aggregated into stable/problem ratios and symptom counts. Environment breakdowns are only shown after several matching reports exist, reducing the chance that a single person is identifiable. One report per update per day is accepted from the same client fingerprint.