windowsupdate.com
Number 59 of the Top 100 · Tranco rank 66
windowsupdate.com is the domain Windows Update downloads from. Every Windows computer reaches it.
Can windowsupdate.com be forged?
Can windowsupdate.com be forged?
No. Receivers that check DMARC refuse mail that forges windowsupdate.com or its subdomains.
- The exact name
- reject · subdomains reject · no reports asked for
- Names that copy
- 7 registered lookalikes can send mail. DMARC never sees them. See them →
What we noticed
- The domain publishes no SPF record.
- The domain has no SPF record.
- No DKIM selector answered, so the mail of the domain carries no signature.
Senders it names none named
These are the services the records name. A record can name a service no longer used, and a sender can sign without being named.
SPFNo SPF record
DKIM0 keys found
We look under the selectors of the services the records name. A domain can have keys we do not find.
Sending names none found
No subdomain of windowsupdate.com that we found publishes mail records.
ReportsNo reports asked for
Aggregate reports (rua) go to mailto:rua@dmarc.microsoft. Failure reports (ruf) are asked for.
Transport MTA-STS none · TLS-RPT none · BIMI none
MTA-STS asks senders to deliver to windowsupdate.com over encrypted connections only. TLS-RPT asks for reports when they cannot. BIMI shows a logo beside mail that passes DMARC at quarantine or reject.
Read on Oct 28, 2026. Check it again yourself →
Watch your own domain's mail this way: Sender Security · the DMARC Report