Product Firefox Release Channel release Version 50.0.2 Build ID 20161129173726 OS Windows 7 OS Version 6.1.7601 Service Pack 1 https://support.mozilla.org/en-US/kb/update-firefox-latest-version '''50.1''' ------------------ Signature: chtbrkg.dll@0x1c3e1 chtbrkg.dll = Internet Download Manager integration = Adware This is for Sumo's Related Bugs 1290403 NEW --- Crash in chtbrkg.dll@0x2e1f0 --------------- You may have ad / mal-ware. Further information can be found in the [[Troubleshoot Firefox issues caused by malware]] article. Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.