Hi @Carl94580345 ,
Thank you for posting in Microsoft Q&A forum.
1,Agree with @Garth Jones . It's recommended to use an IP address range boundary to have a try. And check the LocationServices.log on the clients to see if the clients can locate management points and distribution points.
2, Also check the client logs on the affected devices. The DataTransferService.log and CAS.log can provide information about content download attempts. Look for any error messages or warnings that might indicate the issue.
3,Please make sure that the Distribution Point is properly configured in Configuration Manager. Verify that the Distribution Point role is installed correctly and that it's in a healthy state. Ensure that the required packages and content have been successfully distributed to the new DP. Review the Distribution Point logs for any errors or warnings. Key logs include Distmgr.log, PkgXferMgr.log, and smsdp.log. Check these logs for information about content distribution and client requests.
Here are some official articles for your reference:
Troubleshoot content distribution
Content distribution in Configuration Manager
Thanks for your time. Have a nice day!
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.