Win 10 pro joined to Domain - cant log in with domain users

Win 10 pro joined to Domain - cant log in
Recently bought a PC with Win 10 Home. Upgraded to Win 10 Pro.  Joined the pc to the DOMAIN . After joining to domain and reboot, cannot log in with a domain user. Tried multiple users. I get the error "The user name or password is incorrect. Try Again."
arun lalAsked:
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Chirag NagrekarSystem AnalystCommented:
How do you login into system ? Try domainname\username

If it doesnt work Can you try different user ? In case the one you tried locked out.

Try login using domain admin.
Sam Simon NasserIT Support ProfessionalCommented:
turn off the firewall on both the PC and server and test (in all cases you need to turn them back on)
JohnBusiness Consultant (Owner)Commented:
Recently bought a PC with Win 10 Home. Upgraded to Win 10 Pro.  Joined the pc to the DOMAIN . After joining to domain and reboot, cannot log in with a domain user.

The upgrade could easily have gone wrong. Do a Windows 10 Repair and Keep Everything.

Windows 10 is running, so click on the Download button (not Upgrade Button, select Open (Run) but NOT Save. Allow the program to run. Allow drivers to update. Then select Keep Everything.
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John TsioumprisSoftware & Systems EngineerCommented:
remove it from member of domain and rejoin it

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What server version is the domain controller? Did you add users to the machine when you were joining it to the domain? Can you log on as domain admin?
Prashant ShrivastavaConsultantCommented:
My Suggestion is to format the computer and rejoin domain - looks like your upgrade process is not deleting all information housed for Home Verion. Create a new media and try again as new computer:

Media creation link is given below:

Step 1: Check if your DNS server is up and running
Step 2: Verify if your machine is added to DNS and resolving your domain name correctly.
Step 2.1 : Command prompt <Enter>
Step 2.2 : nslookup <Enter>
Step 2.3 Enter Domain Name >domainname.local
Step 3: Confirm if your machine is added to Active directory under computers.
Step 4: You can ping your domain ( i.e. ping domainname.local) ¦check if this is resolving your your domain server correctly.
Step 5: Join to the domain and try again.
Iamthecreator OMIT Admin/EE Solution GuideCommented:
For the username try
username@domain.local (or whatever it is)
John TsioumprisSoftware & Systems EngineerCommented:
solutions feedback from OP
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