microsoft account to local account on 2 desktops and 'whoami' differs

folks,
i bought 2 refurbushed thinkcentre desktops with win10 pro and set them up and they defaulted to microsoft account logins.

i converted 1 desktop to local account, worked perfect, c:\Users indicates the local account username,
- and if i issue cmd {and run as administrator}, the prompt is c:\windows\systme32>whoami i get 8-srvr\ron; if i issue cmd {but do not run as administrator}, the prompt is c:\Users\ron>whoami i get 8-srvr\ron. THIS IS GOOD

i converted (tried) 1 desktop to local account, half-worked, 'Settings\YourInfo indicates 'ron' as local account + administrator, but the login stayed as microsoft account login with pin AND c:\Users shows the 5character pseudonym of the microsoft account email.
- and if i issue cmd {and run as administrator}, i again get the prompt as c:\windows\systme32>whoami i get 7-srvr\ron; if i issue cmd {but do not run as administrator}, the prompt is c:\Users\rlo03 (the 5character pseudonym)>whoami i get 7-srvr\ron. THIS IS 1/2 GOOD.
-i have a local account with a microsoft account login, and my c:\Users remains under 'rlo03' and not 'ron'.

i would like to remove the miscrosoft account login, drop the microsoft account email reference and convert the c:\Users\rlo03 to c:\Users\ron using the procedure that references the SID to do the renaming in the registry.
the question is ...where do i start... so i do not lose all the stuff in documents/downloads/etc/etc that i put in the 2nd desktop already?

i believe i see how to do it, but not quite the safest place to pick up the string and start the process.
any suggestions would be helpful, thanks, ron

rny1tf said:

folks,
i bought 2 refurbushed thinkcentre desktops with win10 pro

Consider performing clean install after manually saving files.

Another option is a custom install which saves files to Windows.old.
Important files are restored from Windows.old.




For user accounts one or more of these tutorials may be useful:

https://www.tenforums.com/tutorials/id-User_Accounts/

berton/zbook/try3 --> thanks for the responses, apologize for confusion, let me try to add some thoughts.
1. for the desktop that is '1/2 good':
-- somehow i added the local acct but got stuck keeping the microsoft acct login {i followed a microsoft process: start/settings/accounts/family & other users/add someone else/i don't have this person's sign-in info/add a user w/o a microsoft acct.
-- got the local acct, it was added automatically as an admin acct; but somehow the login stayed as the original microsoft acct
2. reading this suggestion:
-- How to Change the Name of a User Profile Folder in Windows 10
When adding a new user account in Windows 10, a profile for the account is automatically created when the user signs in to the new account for the first time.
-- the profile didn't get created for 'ron'; when i re-boot, the login stayed as 'rlo03' from the microsoft acct along with the email acct i used to load win10 {the desktops are refurbished from SytemsLiquidation, come with win10 pro and you need to do setup}
3. the Brink article above is what i need to follow - just as you folks suggest
4. the idea is what i do first, and then the nexts
5. the objective is to eliminate the microsoft acct, eliminate the email acct which i created ONLY to satisfy the microsoft process, AND SAVE everything that sits in c:\Users\rlo03 by moving to c:\Users\ron

so far i did the following:
6. created a restore point
7. did system image & disk image backups using aomei backupper; verified the disk image image, cut the bootable usb {but am still figuring out how to test a restore w/o killing the system - this is the 'chicken' phase - the bootable usb is supposed to be a win-pe process that goes straight into rebuilding everything, but i would rather rebuild onto something other than the internal drive on the desktop

i think i need to do next steps this way:
8. follow the Brink article with the SID process and rename the 'rlo03' as 'ron' in the registry
-- so the question: 'ron' is the admin, if i do cmd (run as admin) 'whoami' i get 7-srvr/ron
-- but right now, 'ron' is not listed in c:\Users\..., only thing there now is c:\Users\rlo03
-- it seems i need to create a profile for 'ron' BEFORE i can give it the SID of 'rlo03', since it wasn't created 'automatically' as suggested by microsoft
---- and why is that? because i can't login as 'ron' since it keeps being presented to me with the microsoft acct 'rlo03' and the 'pin'.

so, 2 'chicken' things:
9. test the backup onto something else - suggestions?
10. create a profile for 'ron' THEN do the SID swap-a-roonie - how to create profile manually for 'ron'?

thanks guys
ron {a newbie here, did the design work, but never the programming, so time to learn python & more, just turned 77 and don't want a fuzzy brain}

Consider starting with a fresh installation and creating only local accounts.

This generally:
cleans problems with a prior installation
cleans bloatware
has optimal performance