1. Should be choose the delete command to delete user, not the remove command;
2 . Choose another method.
Step 1 Find “my computer”, Select “Map Network Drive”

Step 2 Input IP address of the share file system in “Folder”

Step 3 Click “different user name”, Select the User

Step 4 Remove the user "test123" from group domaintest to group seanas in the domain server; Select the Network Drive that you want to disconnect.

Step 5 Map Network Drive again

Step 6 Access is denied

Step 7 Select the Network Drive that you want to disconnect

Step 8 Add the user “test123” to the group domaintest again in domain server, and Map Network Drive

Step 9 Access is successful