unknown error: DevToolsActivePort file doesn't exist

This error usually occurs when trying to launch Google Chrome or other Chromium-based browsers. It indicates that the DevToolsActivePort file, which is used by the browser's developer tools, is missing or inaccessible.

There are several possible solutions to this issue:

1. Close all instances of the browser and try launching it again.

2. Check if any anti-virus or firewall software is blocking the browser from accessing the DevToolsActivePort file. Temporarily disabling such software may help.

3. Rename the folder of the browser's user profile directory and try launching the browser again. The user profile directory is usually located in the following directories:

- Google Chrome: %USERPROFILE%\AppData\Local\Google\Chrome\User Data
- Microsoft Edge: %USERPROFILE%\AppData\Local\Microsoft\Edge\User Data

4. Try running the browser with administrative privileges.

5. If none of the above solutions work, try reinstalling the browser.

It's important to note that this error can also be caused by malware or other system-level issues. If none of the above solutions work, it may be necessary to seek professional help.