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Windows 7: Javascript popup notice keeps appearing....?

03 Sep 2015   #11

W7 Pro SP1 64bit

The screenshot in the original post shows the browser downloading/opening a javascript file. As you have probably guessed by now, that should not be happening. However, that problem has very little to do with the Java app from Oracle.

In general, avoid automated tools that clean the Windows registry. The registry is too complicated to be throwing automated tools at it. Also, extra* registry entries are rarely the cause of slow downs. Missing registry entries can barf stuff. Automated tools can remove vital registry entries.

*empty, blank, no longer needed entries are just not a problem.

My System SpecsSystem Spec
07 Sep 2015   #12

Windows 7 Home Premium 64bit

Finally sorted the problem via Firefox's help desk which was a bit involved, No Script being the cause and now removed together with Java and all's well.

However it's now raised the question about No Script itself which I've always found very useful in the past, but which if I understand it correctly is apparently required when using Java !

What to do.... ?

My System SpecsSystem Spec
07 Sep 2015   #13

W7 Pro SP1 64bit

As I understand it:
No Script only blocks some javascript (JS) code. JS code can be used to do all sorts of bad stuff to the computer - including running Java apps.

Java is like an operating system. It runs as a virtual machine. Java apps run inside of the Java VM. Unfortunately, malicious Java apps can do bad things to the computer.

The best practice is: only install Java if you really need it. You probably don't need it.
My System SpecsSystem Spec

07 Sep 2015   #14

Windows 7 Home Premium 64bit

Seems to continue working ok without Java so presumably there's no need for No Script any more ?
My System SpecsSystem Spec
07 Sep 2015   #15

W7 Pro SP1 64bit

No Script is still of value for what it does. I don't use it, so I cannot say how much trouble it is keep it working well. Maybe others can chime in.
My System SpecsSystem Spec
07 Sep 2015   #16

OEM Windows 7 Ult (x64) SP1


As UNI explained, "Java" (aka JRE) is NOT the same thing as "javascript".

Very few websites and applications require Java these days.
Because it is such a huge security vulnerability, if you don't absolutely need it, it's best to fully remove all traces of it from your system (especially old, outdated versions & leftovers), e.g. with a tool such as JavaRa
So, Java is something that is installed locally on your computer.
You would uninstall it and remove all remnants of it from the system.

As for javascript, it, too can be the source of security vulnerability. And some sites run so much javascript, that page loading and performance are compromised. So it's not a bad idea to block most of it on most websites.
Javascript is something used by websites & applications. It is NOT installed on your computer, like Java.
The approach here would be to use tools to block it when it's feasible to do so.

I have used NoScript for years in all of my Firefox installations, with absolutely no trouble at all. While it may be a bit over-engineered for the average user, with lots of configurable settings, I have found that the default settings + a few minor tweaks work just great. When I need to allow a particular script (temporarily or permanently) on a given web page, it's very easy to do. I think it's an important security extension for Firefox and wouldn't run Firefox without it. Blocking most javascript on most web pages allows Firefox to work better and more efficiently.

Add-on Home page:
Support site:
Support email:

An additional layer of browser protection may be found with Malwarebytes Anti-Exploit.
There is a Free version that shields browsers, and a paid, Premium version which shields browsers and many other internet-facing applications.

Hope this helps,

My System SpecsSystem Spec
08 Sep 2015   #17

Windows 7 Home Premium 64bit

Excellent yes thanks MM now I get the picture. I've used Noscript for years too and prevented a couple of clickjacking attempts and one or two other important things but never got into the complicated selections as I'm definitely not a techie. So I'll do a final clear out of Java and join the No Script forum asap....

Thanks again everyone !!
My System SpecsSystem Spec
08 Sep 2015   #18

Windows 7 Home Premium 64bit

Uninstalled Java ok but a bit confused now....??


Q: Have I got to disable JavaScript from Firefox options to browse safely with NoScript?
A: You must not disable JavaScript in Firefox! NoScript will allow/forbid scripts, but they have to be kept enabled by default, as it almost always is. On Firefox 24 or above this is an hidden about:config preference (javascript.enabled) which must preserve its default true value. On older Firefox versions only (23 or below) you may want to check that Tools|Options|Content|Enable JavaScript* option is still checked (JavaScript enabled), otherwise JavaScript is disabled everywhere even if allowed by NoScript.
*Under Preferences on Mac OS X, Edit|Preferences on Linux.
My System SpecsSystem Spec
08 Sep 2015   #19

OEM Windows 7 Ult (x64) SP1


As far as Java uninstall -- go into the Windows control panel > programs (or use any utility that shows the full list of installed programs) and make sure you don't have remnants of old, outdated versions installed. Many folks end up with quite few old versions + the current one. That JavaRa tool is a good way to completely clear out all remnants, to reduce security vulnerability.

As far as that FAQ from the NS site:
There are 2 ways to disable javascript, EITHER internally from within Firefox itself, OR via the NoScript extension. If I understand that snippet correctly, it's saying that, if you disable javascript from within Firefox, then NoScript cannot do its job.
IOW, you cannot disable it both ways -- it's either/or.
Either disable it from within Firefox, OR use NoScript.
I personally find that using NoScript provides more granular and convenient end-user control.
If you disable it from within Firefox, it's pretty much all-or-none and it can keep you from viewing some "good" content on some sites.

Further clarification on this might be available at the NoScript forum or support email.

My System SpecsSystem Spec
08 Sep 2015   #20

Windows 7 Home Premium 64bit

Thanks agreed, best to use No Script and see how it goes. Keep you posted....

My System SpecsSystem Spec

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