Technical Service Bulletins


Technical Service Bulletins (TSB) are designed to quickly notify a large group of Comsift customers about problems and solutions related to the ComSifter Internet Filter. These can include fixes to new problems and suggestions for increasing the filters efficiency.

The TSBs are emailed—as needed—to current ComSifter owners and/or network administrators and are meant as a technical tool for the administrator of your network. If you are a current customer and are not receiving TSBs, or Comsift is sending the TSB to an incorrect address, please let us know by emailing us at

The following documents are in Portable Document Format (PDF) and require the latest version of the free Adobe Reader (or similar PDF viewer).

September 20, 2016 Emergency Bulletin Windows 10 Anniversary Update
(TSB #1: Temporary Stopgap)
March 30, 2016 Cloud Storage Slowing the Network (QOS)
October 23, 2015 Fantasy Sports Websites: What is the Harm?
December 10, 2014 Security Issue: Bridge Mode and Remote Administration
January 28, 2013 Troubleshooting DNS Issues
October 11, 2012 Microsoft Update KB2661254 — Logging into the ComSifter
August 02, 2012 Block/Bypass User (CS-8D Pro users only)
April 21, 2012 Website not Opening or Displaying Properly
March 28, 2012 NVIDIA Timeout
March 15, 2012 QOS Alert — For ComSifter 'Pro' units
March 02, 2012 Changes in Comsift Blacklist
November 11, 2011 Load Warnings — and How to Improve the Performance of the ComSifter
October 07, 2011 Case of the New Cable/DSL Modem
May 12, 2011 Changes to Google and How it May Affect You
March 16, 2011 Duplicate IPs — A Case Study