Fed up with this auto update nonsense in Mozilla Firefox and Thunderbird ?

Ok. Just do this :

- quit Firefox and Thunderbird
- open the registry editor (Windows+R and then regedit.exe)
- manually expand HKEY_LOCAL_MACHINE / SOFTWARE / Policies
- right-click on Policies and choose Create a new key, name it Mozilla
- right-click on Mozilla and choose Create a new key, name it Firefox
- right-click on Mozilla and choose Create a new key, name it Thunderbird
- click on Firefox, then on the right panel right-click and choose create a new DWORD value, name it DisableAppUpdate, set its value to 1 (instead of 0)
- click on Thunderbird, then on the right panel right-click and choose create a new DWORD value, name it DisableAppUpdate, set its value to 1 (instead of 0)
- quit the registry editor


You're officially out of this auto-update nonsense. Now you can start Firefox or Thunderbird, go in the Help / About box and it will say this : "Updates disabled by your system administrator". This ridiculous chicken game is now over.