Failed to open the system default web browser. Is one installed? Pgadmin4

Question

Just wondering has anyone come across this issue with pgadmin4? Every time I go to open it, I get the following: Failed to open the system default web browser. Is one installed?.

Thanks

I changed the default browser like 5 times. It later worked with chrome, I didn't delete or run any special code — Tiamiyu, Jan 20 '21 at 21:52

score 8 · Answer 1 · answered Dec 22 '18 at 05:20

8

In mac make sure the default browser is selected from System preference

Choose System Preferences from the Apple () menu. Click General Choose your web browser from the ”Default web browser”

If default browser is set, try to change it and try again. This should solve the problem.

answered Dec 22 '18 at 05:20

Siva

81
1
1

1

This worked for me. Simply changing the default browser from Chrome to Safari and then back to Chrome resolved the issue. – willk Mar 13 '19 at 13:03

score 7 · Answer 2 · edited Sep 05 '18 at 17:31

7

My pgAdmin4 was working fine until today, and then I also received the following:

Failed to open the system default web browser. Is one installed?.

I updated to the most current version and still I received the error.

I did two other things before I fixed the problem so I'm not sure which solved it:

I remembered I got a strange pop up in my browser the day before. I ran a virus scan and a tracking cookie was found, I deleted it.
I changed my default browser from Edge to IE (in Windows 10) and then pgAdmin opened. I then put my default browser back to Edge.

edited Sep 05 '18 at 17:31

Felipe Augusto

7,733
10
39
73

answered Sep 05 '18 at 16:28

JLChap

96
3

1

changing default browser from Chromium to Edge solved my problem, many thanks – im_infamous Feb 11 '19 at 23:09
I could sorted as well with the browser change and back – Tamas Kosa Feb 27 '19 at 09:26

score 4 · Answer 3 · answered Sep 24 '19 at 14:17

4

I've killed pgAdmin, then removed .pgadmin folder from the home directory, and now it works like a charm :)

answered Sep 24 '19 at 14:17

Michał Jurczuk

3,728
4
32
56

score 4 · Answer 4 · answered Aug 10 '20 at 16:44

4

When running pgAdmin, wait for maybe 1-2 mins. It should automatically open in your browser. If you click the button to create a new pgAdmin window before that, it will fail because pgAdmin 4 isn't running yet. The wrong error message will be shown.

answered Aug 10 '20 at 16:44

Jake

2,090
2
11
24

This is what worked for me! I was just too impatient, but when I waited, it opened automatically. – displacedtexan Aug 20 '20 at 15:44

score 3 · Answer 5 · answered Jul 12 '20 at 15:50

3

If changing the default browser to IE/chromium/chrome does not work, you can try running it as an administrator. That always works for me

answered Jul 12 '20 at 15:50

Craig Mlambo

41
6

score 1 · Answer 6 · answered Jun 30 '19 at 08:06

1

The reason why most major browsers don't open up pgAdmin is that it is an applet and major browsers have dropped support for Java. Internet Explorer still supports Java applets at the time of this answer and thus works with IE.

answered Jun 30 '19 at 08:06

evuazeze

102
2
7

score 1 · Answer 7 · edited Jul 03 '21 at 04:38

This happens because you have some other app listening on port 5432 or some other is already running on this port and pgadmin not being able to override it.
You can check if there are any other apps at this port (in local host at ip http://127.0.0.1) by running following command in powershell:

netstat -ano | findstr :5432

Possible fixes for this problem:

You can configure pgadmin to run at port other than 5432, by right clicking on pgadmin (elephant icon) in your notification shade and click on 'configure' and changing the port to something else, like 22 there.
Or, if you have already setup lots of applications to use postgresql on port 5432 and don't want to change the port, you can kill the application running on 5432 by running:

taskkill /PID 5280 /F

Replace "5280" with the number listed next to LISTENING when you run the first command. this will kill what was running at 5432. Now, you can should be able to run pgadmin without any problems.

Here you can see me finding the app, killing it, checking if it's running after having killed and then checking after running pgadmin:

In first command, I have checked what's running at 5432 port.
In second command, you can see that I have killed it.
In third command, I have checked if there's anything running again.
Then I started pgadmin and checked what's running at port 5432 in fourth and fifth commands. (I clicked on pgadmin and then ran this command quickly, that's the reason you can't see 'LISTENING' in fourth command.)

Why is pgAdmin even conflicting with opening it's UI based on a port like this. That's wack — PositiveGuy, Oct 02 '20 at 02:24

score 1 · Answer 8 · answered Nov 02 '20 at 23:09

I experienced this problem and then 24 hours later everything seemed to be working fine again. I did not delete my internet history, restart my PC or change my default browser. The problem just seemed to fix itself. If you have tried some of the suggestions above and the problem still persists. Then maybe in 24 hours time you will just be lucky and see the problem unexpectedly go away.

score 0 · Answer 9 · edited Mar 10 '19 at 18:43

if you have this problem [Failed to open the system default web browser. Is one installed ]

I fixed that , just by setting another default browser ,in my case I was using Chrome, then I installed Firefox Mozilla but for pgadmin4 to work, you must find the file pgadmin4, that is in file programs :

postgresql/11/pgadmin4/bin/docs/en_US/html/

then you must replaced in the html file "browser" like default with another browser that you prefer (besides Internet Explorer).

score 0 · Answer 10 · answered Feb 16 '22 at 21:50

0

The problem seems to be that pgAdmin4 runs in an old version of Flask, the two simplest options are:

Install it thru pip (not pacman or apt-get) in a virtual env, here is the tutorial from pgAdmin website
Use a different program like Dbeaver

answered Feb 16 '22 at 21:50

Griner

151
1
8

Julian Leite · Answer 11 · 2020-04-01T15:30:57.600

-1

It happens because PGAdmin didn't found a default browser, note PGAdmin is web-based tool and it needs a browser to run. On windows, go to system settings and set your preferred browser as default browser.

edited Apr 01 '20 at 15:30

answered Apr 01 '20 at 15:19

Julian Leite

114
1
2
8

Failed to open the system default web browser. Is one installed? Pgadmin4

11 Answers11