Hello,
Thank you for posting in Q&A forum.
Please kindly find the answer below:
Issue1.Why RDP client from MS store doesn't support multiple monitor display?
The RDP client downloaded from MS store is "Remote Desktop Universal Windows Platform", which doesn't support multiple monitor display function.
REF: https://apps.microsoft.com/detail/9wzdncrfj3ps?hl=en-US&gl=JP
Issue2.RDP client doesn't allow entering credential.
You can try below steps to troubleshoot the issue:
1.Change the credential delegation setting
a.Press "Win + R", type "gpedit.msc" to open group policy editor
b.Navigate to: Computer Configuration > Administrative Templates > System > Credentials Delegation > "Allow delegating saved credentials with NTLM-only server authentication" and "Allow delegating saved credentials".
c.It's not enabled, please enable the section and add "TERMSRV/*" to the list.
d.Restart the OS to apply the setting and try again.
2.Download the latest RDP client version from below website:
To help other customers who may be facing the same issue, please don't forget to vote if the reply is helpful.
Best Regards
Zunhui