How to Reset Identity Column Value In SQL Server without Delete Records.

Remove foreign key reference (if any) from YourTabe and set Is Identity to No in column properties windows in Microsoft SQL Server Management Studio. Execute the bellow SQL using Management Studio.
 

USE YourDataBase
 
SELECT [YourTableId],ROW_NUMBER() OVER (ORDER BY YourTableId ) AS RowNumber
    into #tempTable from [YourTable]
 
DECLARE your_table_cursor CURSOR FOR
    SELECT [YourTableId], RowNumber
    FROM #tempTable
 
OPEN your_table_cursor
 
DECLARE @YourTableId int
DECLARE @RowNumber int
 
FETCH NEXT FROM your_table_cursor
INTO @YourTableId, @RowNumber
 
WHILE @@FETCH_STATUS = 0
BEGIN
    UPDATE  [YourTable]
        SET [YourTableId] = @RowNumber
        WHERE [YourTableId] = @YourTableId
 
    FETCH NEXT FROM your_table_cursor
    INTO @YourTableId, @RowNumber
END
 

CLOSE your_table_cursor
DEALLOCATE your_table_cursor
 
DROP TABLE #tempTable 
 

 
Set Is Identity to Yes and set Identity increment to 1 and Identity Seed to 1 in column properties windows in Management Studio. Then set reference.