You may find that your PC is updated automatically to the latest version of Microsoft Internet Explorer. This may cause some programs to function incorrectly as support may not yet be available for the newest version of Internet Explorer.
To downgrade Internet Explorer following the instructions in the following knowledgebase article.
To prevent your PC from re-installing the latest version Microsoft provides the following methods for blocking the automatic updates.
Prevent Automatic Update to Internet Explorer 9
Prevent Automatic Update to Internet Explorer 10
Prevent Automatic Update to Internet Explorer 11
In addition your network administrator may be able to prevent any future updates to Internet Explorer from automatic installation as well.