Click the error message you received in the list below :
If the error you're experiencing is not in this list:
Follow the steps below in the indicated order.
After each step try to connect with Isabel 6 and sign a transaction.
Open the Isabel Control Panel. Doubleclick the Version Icon. If the version number shown is lower than 6.32.0010:
Check if there are specific security software packages installed (or any other programs that might interfere with the workings of Isabel 6).
Adapt the configuration if necessary.
Check the LAN settings:
Remove all of your Isabel certifcates:
Start Isabel 6 and try to login.
Verify if the websites of Isabel 6 and/or eGovernment websites are available in your list of Trusted Sites.
Make sure you have installed the latest security patches in Windows and verify the following settings in Internet Explorer:
Verify the Internet Options > Connections > LAN settings. Copy all available information since this is required to connect to the internet.
After the reset of your browser, if you have copied some settings at the beginning of the procedure, you can now go back to LAN settings to restore them.
Verify if 'Automatically detect settings' is disabled.