There is no solution to the decryption error of the remote user 'sa' and the service master password mapped from the remote server 'to the local user' (null) /sa '

1. problem

When creating a linked server （ Whether it is added with sentences or pictures ）,
perform “EXEC sp_addlinkedsrvlogin ‘SER_REMOTEERP’,‘false’,null,‘sa’,‘ password ’”,
appear ：“ There is no remote server ’‘ Map to local users ’(null)/sa’ Remote users of ’sa’ And service master password decryption error ”

-- The creation example is as follows 
--SQLOLEDB  The default is SQL database 
--SER_REMOTEERP  Get the service name for you , Can write 192.168.1.2  You can also choose any other 
EXEC sp_addlinkedserver   'SER_REMOTEERP','','SQLOLEDB','192.168.1.2'
                                                -- Local user name , Remote service login , Password of remote service 
                                                -- For general creation  null  or SA
EXEC sp_addlinkedsrvlogin 'SER_REMOTEERP','false',null,'sa',' password '
EXEC sp_serveroption      'SER_REMOTEERP','rpc out','true'

2. terms of settlement

stay sysadmin Execute under the permission of the user , Direct use recommended SA Account login ,
Execute the following statement ：alter service master key force regeneraten

alter service master key force regeneraten 

3. Recreate And verification

take EXEC sp_addlinkedsrvlogin ‘SER_REMOTEERP’,‘false’,null,‘sa’,‘ password ’ No error will be reported after execution
Select the interface → Click test connection → Prompt success