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failed to create burp project: cannot parse null string.

The | Last updated: Sep 14, 2023 03:47AM UTC

os : windows version: burp suite community edition v2023.9.4 error : an error occurred when starting a project with the selected options failed to create burp project: cannot parse null string. i don't have any idea why is this error occurs. i tried java 17 and java 20 also. idont think java version is the problem. need a quick rply . cuz im working on a project

Michelle, PortSwigger Agent | Last updated: Sep 14, 2023 08:09AM UTC

Hi When did this issue first occur? If this was after an update, do you remember which version of Burp you used previously? Do you use the installed version of Burp, or do you launch the Burp JAR file from the CLI? If you use the installed version, if you install an older version such as 2023.7.3 does the issue still occur? If you then allow this earlier version to upgrade to the latest version, does the issue still occur?

Ioannis | Last updated: Sep 18, 2023 09:25AM UTC

Hi, Not sure if this is going to help, but I was getting the same error even when I was trying to create a temporary project. I was running Burp on my host and had removed JRE from my host. Burp was using the embedded JRE environment from the downloaded version every time. I tried installing previous versions back to 2022.12 but it didn't work. Then suddenly installing 2022.05 magically fixed something in registry I believe. Then I was able to update up to 2023.10.1.1. Forgot to mention that I was running Burp from CLI using --use-defaults and --diagnostics.

Michelle, PortSwigger Agent | Last updated: Sep 18, 2023 10:44AM UTC

Thanks for the update. It's good to hear you've been able to upgrade now. If it happens again, can you please let us know?

Khael | Last updated: Nov 03, 2023 06:28AM UTC

I had the same problem, starting a couple weeks ago. Same error when trying to start burp on the community edition. Uninstalling and installing 2022.5 worked for me as well. I'm also running Windows 10

Michelle, PortSwigger Agent | Last updated: Nov 03, 2023 10:40AM UTC

After installing 2022.5 were you able to upgrade to the latest version without any issues?

Burp User | Last updated: Nov 03, 2023 05:30PM UTC

I'm having exactly the same error with the Professional v2023.10.2.4 on Windows 10. The error pops up at the end of the project creation wizard. Tried to re-install the software while cleaning the old installation folder to no avail, tried disabling extensions which didn't help either. It worked just a week ago.

Ben, PortSwigger Agent | Last updated: Nov 06, 2023 09:36AM UTC

Hi, For the error that you are experiencing are you able to try the following. If you could uninstall/remove the current version of Burp that you are using and obtain the 2023.6.2 release (available here - https://portswigger.net/burp/releases/professional-community-2023-6-2?requestededition=professional). If you could then install this version of Burp and then launch the software. At this point, you should hopefully be able to use Burp as normal. If you could then use the Help -> Check for updates functionality within the software itself, which should prompt you that a newer version is available. If you could then download the newer version via the update prompt and, when prompted after the download has completed, restart Burp. At this point you should be running the latest version of Burp and should, hopefully, be able to launch and run this latest version as expected. Could you let us know if this workaround allows you to run the latest version of Burp?

Josh | Last updated: Nov 10, 2023 09:34PM UTC

I'm having the same problem. I have uninstalled it and reinstalled the newest version for the link above. The problem persists.

Ben, PortSwigger Agent | Last updated: Nov 13, 2023 10:32AM UTC

Hi, To clarify, did you install the older version that I linked to and then updated to the latest version from within Burp itself or have you directly installed the latest version from the release page?

CyberSamuraiDK | Last updated: Nov 13, 2023 02:15PM UTC

Hello Friends. I also had this exact problem. But i followed this: "Hi, For the error that you are experiencing are you able to try the following. If you could uninstall/remove the current version of Burp that you are using and obtain the 2023.6.2 release (available here - https://portswigger.net/burp/releases/professional-community-2023-6-2?requestededition=professional). If you could then install this version of Burp and then launch the software. At this point, you should hopefully be able to use Burp as normal. If you could then use the Help -> Check for updates functionality within the software itself, which should prompt you that a newer version is available. If you could then download the newer version via the update prompt and, when prompted after the download has completed, restart Burp. At this point you should be running the latest version of Burp and should, hopefully, be able to launch and run this latest version as expected. Could you let us know if this workaround allows you to run the latest version of Burp?" And it worked for me, to update burp from version 6.2, launch the software and update from inside burp to 10.3.4

Angel | Last updated: Nov 20, 2023 11:45PM UTC

Same error, but I followed the procedure outlined in the post above, downloaded version 2023.6.2, and it opened without any issues for me.

Amir | Last updated: Dec 04, 2023 03:30PM UTC

The solution of CyberSamuraiDK worked for me.

Henry | Last updated: Dec 06, 2023 08:58AM UTC

Same here, but I couldn't fix it. - tried all the things from the post - tried also older burp versions - tried several JREs Azul, OpenJDK, Oracle and so on... Nothing worked for me.

Henry | Last updated: Dec 06, 2023 09:22AM UTC

Ok, found a solution. Burp needs to be uninstalled completely - then follow @CyberSamuraiDK.

HWANG | Last updated: Jan 10, 2024 06:45AM UTC

Delete Folder C:\Users\"user name"\AppData\Roaming\BurpSuite Reinstallation

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