Entra Cloud Sync agent

What the Microsoft Entra Cloud Sync provisioning agent needs from the server it runs on.

Server or agent · GCC High · checked against its pages 20 Oct 02:28 UTC · Microsoft Entra

Where these entries come from

24 from 1 publisher page

Prerequisites for Microsoft Entra Cloud Sync 1 section · 24 entries · read 20 Oct 02:28 UTC

Changes in the last 90 days

None of these pages added or removed a destination in the sections this bundle reads.

ChangeIntel reads each page once a day: the destinations in its tables, lists and code blocks, under the sections named above. Entries follow the page; nothing is added that it does not publish.

Downloads

Built from the pages and endpoint sets above, as last read

Format	Destinations	Download
Plain list, one per line	24	Open
GSA V1 domain list	24	Open
GSA V1 Graph request body	24	Download
GSA V2 rules (review JSON)	24	Download
GSA V2 rules (CSV)	24	Download

About these formats and checking them on a device

"Left out" counts entries a format cannot hold: IP ranges in web filtering, mid-name wildcards, URLs in a V1 domain list, and unfilled values. The V2 JSON is a review format; Microsoft publishes no Graph request shape for V2 rules yet. See how V1 and V2 evaluate.

The same entries are JSON at /api/v1/access-bundles/entra-cloud-sync?cloud=USGovGCCHigh. To check them from the workstation itself, run Test-ChangeIntelAccessBundle -Bundle entra-cloud-sync -Cloud USGovGCCHigh from the ChangeIntel PowerShell module there: it resolves DNS and tries TCP and TLS to each published host, and reports certificate issuers that suggest TLS inspection.

The profile each destination goes to is inferred from Microsoft's published material, not confirmed. Confirm in the Global Secure Access client: Advanced diagnostics, Forwarding profile.

Expected to reach web filtering

15expected to go through the Internet Access profile, where a block-by-default web filtering policy would have to allow the ones your scenario needs

Expected to reach web filtering
Destination	Why it's needed	Source
`ctldl.windowsupdate.us`TCP 80	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`enterpriseregistration.windows.net`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`login.windows.us`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`management.azure.com`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`*.microsoftonline-p.us`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`*.msappproxy.us`	The agent uses these URLs to communicate with the Microsoft Entra cloud service.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`*.msauthimages.net`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`msauthimages.us`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`*.msecnd.net`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`*.msftauthimages.net`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`msftauthimages.us`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`*.phonefactor.net`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`policykeyservice.dc.ad.msft.net`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`*.servicebus.usgovcloudapi.net`	The agent uses these URLs to communicate with the Microsoft Entra cloud service.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.
`www.microsoft.us`TCP 80	The agent uses these URLs to verify certificates.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Internet Access profile · indicated, not confirmed Not in the Microsoft 365 endpoint list the Microsoft traffic profile is built from, so it is expected to go through the Internet Access profile when that profile is on. Not confirmed: the Entra system profile's hosts aren't published.

Not determined

9public material doesn't settle it; check the client's forwarding profile

Not determined
Destination	Why it's needed	Source
`aadcdn.msftauthimages.us`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Profile not determined · possibly the Microsoft traffic profile In Microsoft 365 Common endpoint set 14 (Default category). Microsoft documents that the Microsoft traffic profile is built from this list, combined by traffic category, but not which categories it includes.
`crl.microsoft.us`TCP 80	The agent uses these URLs to verify certificates.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Profile not determined Looks like a certificate validation host and isn't in the Microsoft 365 list. Microsoft documents that the Entra system profile covers certificate validation but lists no hosts, so this can go either way.
`*.microsoft.us`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Profile not determined Broader than the Microsoft 365 entries it includes (such as set 13): those parts are expected to go to a Microsoft profile and the rest to Internet Access.
`*.microsoftonline.us`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Profile not determined Broader than the Microsoft 365 entries it includes (such as set 13): those parts are expected to go to a Microsoft profile and the rest to Internet Access.
`*.msauth.net`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Profile not determined · possibly the Microsoft traffic profile In Microsoft 365 Common endpoint set 14 (Default category). Microsoft documents that the Microsoft traffic profile is built from this list, combined by traffic category, but not which categories it includes.
`mscrl.microsoft.us`TCP 80	The agent uses these URLs to verify certificates.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Profile not determined Looks like a certificate validation host and isn't in the Microsoft 365 list. Microsoft documents that the Entra system profile covers certificate validation but lists no hosts, so this can go either way.
`*.msftauth.net`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Profile not determined · possibly the Microsoft traffic profile In Microsoft 365 Common endpoint set 14 (Default category). Microsoft documents that the Microsoft traffic profile is built from this list, combined by traffic category, but not which categories it includes.
`ocsp.msocsp.us`TCP 80	The agent uses these URLs to verify certificates.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Profile not determined Looks like a certificate validation host and isn't in the Microsoft 365 list. Microsoft documents that the Entra system profile covers certificate validation but lists no hosts, so this can go either way.
`secure.aadcdn.microsoftonline-p.com`	The agent uses these URLs during the registration process.	Prerequisites for Microsoft Entra Cloud Sync · Firewall and Proxy requirements Profile not determined · possibly the Microsoft traffic profile In Microsoft 365 Common endpoint set 14 (Default category). Microsoft documents that the Microsoft traffic profile is built from this list, combined by traffic category, but not which categories it includes.