Why can't I share files or printers over the Internet? For All Applications, All Operating Systems, and All Domains 1. What is happening? In response to the newly announced vulnerability attributed to computers running certain Microsoft Operating Systems, SBC Internet Services has blocked TCP port 135. This port is known to be used by worms and viruses to spread to other computers through the Internet. Blocking this port may affect your ability to use: * Microsoft Outlook to access a Microsoft Exchange server over the Internet. * File sharing over the Internet. * Print sharing over the Internet. This action...