Issue: This is the error you might have faced while installing Postgre Sql "A non-fatal error occured during cluster initialisation in Postgre SQL"

Step-2: Delete Folder PostgreSql from ProgramFiles

Step-3: Now create a new Folder with the same name "PostgreSql"  as shown in the pic

Step-4: Run setup again By right clicking and selecting Run As Administrator

Step-5: Change Installation location by default to 

C:\PostgreSql by clicking on right side folder icon

Step-6 : Clicking Next and on Next Step Change Data Folder Location To 

C:\PostgreSql\PostgreSqlData

Step-7: Setting Folder Location

Step-8: Enter your Username and Password .You will need this while setting up database connection

Step-9: Click Next and Installation will start

Step-10: Click on FInish After Installation complete

Step-11: Look for pgAdmin4 and click on that to start PostgreSql

Step-12 You will see error again. But don't worry just press ok

and Go to pgAdmin4  again and click it to reopen PostgreSql

If you see this error than press ok and go to pgAdmin4 and reopen PostgreSql again and this will work

Step-13: Congrats this time it will open perfectly and this is how we can solve Issue A non-fatal error occured during cluster initialisation in Postgre SQL.

You can also have a look at our  video tutorial available with step by step explanation

A non-fatal error occured during cluster initialization video tutorial