Mathwiz

30.0.0.154 seems to have an issue on FF 52.9. Adobe's "check Flash version" page shows this: RoyTam's Basilisk 52 for XP does the same thing, but IE 8 looks correct: Edit: Whoops, what happened to the images?

Rather than having to remember to switch back and forth, couldn't you just set up an IE11 UA specifically for YouTube and use a Waterfox UA as the default? Even without an add-on like User Agent Switcher, you can create a string pref "general.useragent.override" which can contain whatever user agent string you want; e.g., "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.9) Gecko/20100101 Firefox/52.9" will make it look like you're running Firefox 52.9 on Windows 7. Substitute the default UA string of your choice. Then, if pref "general.useragent.site_specific_overrides" is "true" (the default), you can create a string pref "general.useragent.override.www.youtube.com" with the string "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko" to make YouTube think you're running IE11.

When IE8 is installed, it appears in Add/Remove programs under "Windows" Internet Explorer 8. If you look for it in the I's, you won't find it. As for IE8 registry entries, try running regedit and looking under HKLM\Software\Microsoft\Internet Explorer. (Naturally, this time it's "Microsoft" Internet Explorer, not "Windows" Internet Explorer. M$ is nothing if not inconsistent.) There's a Version value under that registry key (as well as a W2KVersion and Build value). Not sure what you need to set them to in order to install IE6, but I think some folks here (might try a PM to apreese16) may still have IE6 installed. Edit: You might try setting Version (and W2KVersion) to 6.0.2600.0 to see if that lets IE6 install. Also set the "IE" value under HKLM\Software\Microsoft\Internet Explorer\Version Vector to 6.0. Back up all the registry settings first: right-click the "Internet Explorer" key, click "Export," and give it a file name. That way you can just double-click the .reg file you create to put everything back as it was.

Latest version is now 12.3.4.204. Not sure when it was released.

Well, this is MSE version 4.4, the last intended for XP; but the definition files have certainly been expanding even if MSE itself hasn't been updated. I suspect MSE scans pretty much any process that does certain things (like accessing the Internet), whether or not it specifically recognizes the process as a browser. Regarding IE8, it doesn't spike if I just open it, but that's because my home page is on my local machine. If I try to access, say, Microsoft Update, it spikes just like the other browsers. The definition files have probably just gotten so big that browsing on an older (or a virtual) machine just isn't feasible anymore, unless you exclude the browser process from MSE and use something like MBAE instead. If at first you don't succeed, try more silicon

SeaMonkey 2.49.4 (https://www.seamonkey-project.org/releases/seamonkey2.49.4/) has been released. It's based on FF 52.9 so there's a good chance it'll be the last XP version. According to https://www.seamonkey-project.org Automatic upgrades from previous versions are, for most configurations, disabled for this release. If you need to upgrade from an earlier version, please download the full installer from the downloads section and install SeaMonkey 2.49.4 manually over the previous version.

Well, I only had one tab open in Slimjet, and my Firefox/Basilisk browsers have the uBlock Origin ad blocker, so Slimjet may have looked like it was using less for those reasons. If I'd done any "serious" Web browsing with it, I probably would have seen its RAM go up (and presumably, its speed go down, as MsMpEng.exe had to work harder and harder). Edit: VMs will always be slower than physical machines, given the same hardware; it may be the case that if you just throw enough silicon at it, the problem with MSE is too small for folks to even notice. I'll give New Moon 28 a shot. I expect it'll also be very similar to Firefox 52.9 and the two Basilisk variants, but I'm always willing to be surprised! Enough folks use the beta versions to show up in "most common user agent" lists . Surprising how many are willing to be on the "bleeding edge."

Basilisk 55 (Moebius) is also sluggish with MSE if basilisk.exe isn't excluded: (Oh, for crying out loud - apparently it's "Forbidden" to post a screen shot now.) Apparently MSE slows down all Firefox-based browsers. I'll try Slimjet 10 when I get a chance. Edit: MSE spikes with Slimjet too, but it didn't seem as sluggish to me. That could be just my imagination, or it could be because the Slimjet processes use less RAM than Firefox/Basilisk (hence quicker/easier for MSE to scan); I don't know.

Although we were just trying to tame zippyshare.com so you could download one of heinoganda's files, I realized it would be of interest to other users of Roytam's XP browser builds. So this thread seemed the most logical place to respond.

Better late than never, but here (I believe) is the answer: The default user agent string normally isn't stored in the prefs; instead, it's built on-the-fly. However, you can create a string pref "general.useragent.override" which can contain whatever user agent string you want; e.g., "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.9) Gecko/20100101 Firefox/52.9" will make it look like you're running Firefox 52.9 on Windows 7. Moreover, if pref "general.useragent.site_specific_overrides" is "true" (the default), you can create string prefs of the format "general.useragent.override.www.mysite.com" which can contain a special user agent string only for www.mysite.com.

The above link works with Basilisk, so probably New Moon 28 as well. Just click on the .xpi file then tell your browser it's OK to download....

Both browsers are now excluded from MSE so I installed MBAE 1.12.1.90. Seems to work with Firefox OOTB. I added a "shield" for serpent.exe so hopefully it's covered as well.

No problem. Are you on New Moon 28 yet? IIRC it was forked from FF 52 so you should be able to load uBlock Origin as an add-in. That should help with zippyshare and their ads.

I understand FF is now up to version 62, which would be 52.10 if they'd maintained 52 ESR that long (which they've never done, nor was I expecting them to). So I decided it was finally time to give Roytam's Basilisk a whirl. Works fine, acts much like FF 52, from which it was forked; but it seemed sluggish, so I checked the task manager. And guess what? MsMpEng.exe is back up to ridiculous% CPU again! *Sigh* Guess I'll have to exclude the basilisk.exe process from MSE too. Don't worry folks; I understand the risk. I'll keep Basilisk up to date.

Zippyshare.com is renowned for hosting deceptive ads that look like the actual download link, and pop-ups that try to scare you into downloading their spyware. Unfortunately, there aren't a lot of good alternative file sharing sites around.

Kind of sets a bad precedent: the whole justification for "activation" was to prevent casual copying; i.e., installing your copy of Office on more than one machine. Maybe we should have seen this coming, but supposedly, activation wasn't intended to force you to upgrade your software when you bought a new machine and wanted to transfer old software to it.

I was specifically after the "certutil.exe" utility. AFAIK it's only available as part of the full package. Edit: Although thanks Heinoganda for listing the two files I (and 99% of us) really needed. Unfortunately I'd already installed the whole thing. Anyway, I have it now - along with a boatload of other utilities I'll never use in my "Administrative Tools" folder.

Sometimes I wonder about Microsoft. I downloaded the "Server 2003 Admin Pack" from Thomas S's link and ran the .exe. Turns out the first thing it does is ask for a directory. I thought installers were supposed to know where to install themselves! So I picked C:\Program Files\Microsoft, and it extracts a few files into that directory and quits. One of those files is a .msi, presumably the "real" installer. The others are a readme and a .vbs script. What the heck is that for? The readme doesn't say. Luckily "apver /?" (from a command prompt) does. It returns your Windows version in ERRORLEVEL So, not really relevant. I finally just ran the .msi, and wondered why Microsoft didn't just include the other two files in it, and download that to start with, avoiding the need to go through all that extra rigamarole. Running the .msi seems to have installed everything successfully, but I don't really know for sure what it installed or where! (Edit: Certutil.exe was installed in C:\Windows\System32.) There are no new options in the Start / Programs menu.

Hmm.... Happened to me thrice on July 6, but not since. If it happens again I'll try the solution at the link.

I'll give it a shot if you know of a good test page for it.

I take your point. An unpatched Firefox exploit could be used to take over its process while browsing, and MSE wouldn't see it. I'm risking the chance of running into malware that exploits a security hole before I get around to downloading one of Roytam's builds that patches the hole. (I'll see how well his builds run before I consider excluding their processes too; maybe I'll be lucky and one will run just fine with no exclusion.) I just wanted to point out that there's some risk when you make any exclusion, particularly one published on the Internet. It's sort of an open invitation for malware authors to target MsMpEng.exe, knowing that there will be a few vulnerable systems out there. That said, I bet you haven't tried using an XP system running MSE with the Todoist Web page open in Firefox. For a few weeks I thought someone had replaced my CPU with a 486! Besides, as Dibya said, most of today's malware won't run on XP anyhow. The risk of malware exploiting a newly-discovered security hole but also running on XP isn't zero, but it's probably rather small.

Thanks! That tip is the same thing Heinoganda suggested, but somehow it seems more authoritative when it's been posted at "tweaking.com" (especially with a note that MSE has a bug that causes it to repeatedly scan itself). For me, excluding the huge firefox.exe process was enough to tame MSE, but the "troublesome" processes might be different on each PC. This should work for all MSE users. Of course I guess the downside is that applying it opens up the possibility of a virus infecting MsMpEng.exe itself, but I'll take my chances.

So should we copy the old u152 jfxwebkit.dll over the u181 one, or will that cause other problems?

Haven't tried this myself yet, but after installing .NET 4.0, try the following two commands from an elevated command prompt: cd C:\Windows\Microsoft.NET\Framework\v4.0.30319\ ngen update You'll get some error messages but it's been reported to significantly improve boot-up time. Don't know for sure, but you may need to redo that after applying .NET 4.0 updates, so you may want to put it in a .bat file.... Also suggested: disabling (or setting to manual) the Microsoft .NET Framework NGEN v4.0.30319_X[86/64] service, but I don't know if that will prevent your new app from running. Worth a try if the above doesn't help. As to why this works, here's the best explanation I found:

Haven't tried that yet. Setting firefox.exe as an exception really helped though. I wonder if there was some change with 52.9 that MSE just didn't like? Doesn't seem like 52.8 was nearly as bad.