You may get errors when trying to make a change in TAC. However, even after adding and verifying the correct entries, you still get connection or authentication errors.
Many times, old entries, such as old paths permissions or passwords, are stored in the Tomcat cache itself. You may make a change, but your Talend module, such as TAC or AMC, may still give you errors.
You can use the command line (Windows) or terminal (Unix/Linux) or a GUI client (Windows File Explorer, etc.) to make the changes—it makes no difference.
To resolve this:
The procedure for Unix / Linux is the same as for Windows. The directories are the same, but the paths will use forward slashes ('/') instead of backslashes ('\').