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How to fix error “No mapping between account names and security IDs”

Method one:

  1. Hold down CTRL and the ALT keys then press the DELETE key found above your arrow keys. (CRTL+ALT+DELETE)
  2. On the screen presented next use the “Sign out” option there and resign to resolve this issue.
  3. If this didn’t work then proceed to method 2.

Method 2: Fixing it in the “Microsoft Management Console”

  1. Open ’CMD’ by using Win+R to open the ‘Run’ box.
  2. In the Run box displayed type “mmc” and press the ‘OK’ option.
  3. In Microsoft Management Console, select the File menu, and then click Add/Remove Snap-in.
  4. Select Local Users and Groups, and then select ‘Add’.
  5. Select Local computer, click Finish, and then select ‘OK’.
  6. Select the Users folder.
  7. Select the Action menu, and then select ‘New User’.
  8. Type the appropriate information in the dialog box displayed, and then select ‘Create’.
  9. When you are finished creating user accounts, select the ‘Close’ option.
  10. Then proceed to restart the computer.