PostgreSQL Windows Installation Problem running post-install step. Installation may not complete correctly.

Yesterday, when I install PostgreSQL on Windows 7, it always report the following error:

[stextbox id=”alert”]Problem running the post-install step. Installation may not complete correctly.[/stextbox]

… when the installation progress bar reached the end.

After doing a bit searching, I found the solution.

Solution:

Uninstall PostgreSQL
Run command: net user postgres /delete
Click: Control Panel -> User Accounts -> Configure advanced user profile properties -> delete all “Unknown User” instances that seem to be left from PostgreSQL installation.
Run command: net user postgres dbpass /add
Run: compmgmt.msc -> Click Local Users and Groups -> Users -> postgres ->Member of -> Add… -> Administrators -> OK
Run: runas /user:postgres cmd.exe -> cd \ -> postgresql-8.4.9-1-windows.exe -> installed successfully without errors. Checked data folder and confirmed files created successfully.
Run: compmgmt.msc -> Local Users and Groups -> Users -> postgres -> Member of -> Administrators -> Remove
Run: compmgmt.msc -> Local Users and Groups -> Users -> postgres -> Member of -> Add… -> Power Users -> OK

Installation completed successfully! Enjoy

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[stextbox id=”warning”]Your opinions, comments and suggestions are important to keep the page updated and interesting. [/stextbox]

Mohit Chandra

6 Badges

26 Mar, 2015
Updated by - Mohit Chandra
28 Jun, 2019
Updated by - Mohit Chandra

28 comments

Karthik C 3 years ago

Thanks buddy it worked 🙂

Anisha Bahukhandi (Moderator) 3 years ago

Hello Karthik,

Thanks for your Valuable words! Stay tuned…

Regards

Anisha Bahukhandi

Vishnu 3 years ago

Thanks a lot Mohit. It worked in my Windows 10 machine.

Yash Agarwal 3 years ago

Thanx! Worked 🙂

Anisha Bahukhandi (Moderator) 3 years ago
Hello Yash Agarwal,

Thanks for your valuable feedback! Stay tuned for more blogs…

Regards
Anisha Bahukhandi

Tian 4 years ago

This works for me! Thank you!!!

Rana Rashid 4 years ago

I got this
Enter the password for postgres:
what should I write for the password

Mohit Chandra (Moderator) 3 years ago
Though it’s late: By Default, the user is ‘postgres’ and the password is the one which you enter while installing the database.
Thanks

John Stevens 4 years ago

This was the only link I found on the issue and it worked like a charm^ Thanks!!

Marcus 4 years ago

This worked! Thanks a bunch!

Alex Bender 4 years ago

Full working!

umfy 4 years ago

If it still doesn’t work check if you have c:\windows\system32 added to your PATH.

Rajat Sharma 4 years ago
yes. What should i do next

JR 4 years ago

I had the exact same problem, and this worked! Thanks a lot!

Nitin Rangarajan 4 years ago

Thank you so much Mohit! This was the only source that worked for me. Also, running “compmgmt.msc” in Windows 10 doesn’t show up Local Users and Groups. We have to run “netplwiz” to modify that.

But, thank you so much. I spent hours trying to work this out. Do you mind if I write an article on this. I will refer your article as the main source.