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• Flash stream makes my internet slow and cpu rush

  - by user1225840

  When I try to watch a live Flash stream, my CPU usage goes up to 75% and my Internet speed goes down. If I run a test before the video-stream, my speed is ~40/10Mbps and during the stream it drops to 0.1-0.5Mbps. The stream is laggy and I can only watch one to two seconds at a time, start/stop/start/stop. I have cleared my history, cache, cookies, temp files, and so on. I have searched for malware and took care of that. I have updated my drivers, reinstalled Flash and everything else I can think of, but it remains slow. I had this problem before and it just started working normally from one day to another. Could it be a hardware problem?

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• Issue with https:// url going to an unknown location

  - by Brandon

  We have a website (ASP.NET/Plesk 9.5.5) that can be accessed just fine through the regular URL (http://example.com). However when accessing the site through https://example.com the site displays the invalid security certificate warning, which is fine since we don't have an SSL certificate. If I add an exception, I'm sent to a completely separate site that is apparently hosting a malware script (I'm still on https://example.com though). Because of this Google has flagged the site as dangerous. I can't find anything in the Plesk panel that would help fix this, and as far as I can tell those files don't exist on our server. How do I tell where the https:// link is sending me? I'm not that familiar with DNS, but is that what is causing this behavior?

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• Which Linux variant to install on VirtualBox?

  - by Rohit

  Answer to one of my previous post suggested me to use VirtualBox for Sandbox experiments with malware files. I installed VirtualBox and now it demands a bootable CD to install the OS. I want Linux to be installed in it. I guess Debian or Ubuntu are the most popular variant. I want an ISO image that creates a bootable CD or a single DVD with that Linux variant and should include only the basic installation not much features. It should fit in at least 3 or 3.5 GB. Which one is more compatible with VirtualBox?

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• Is the hosts file ignored in windows if DNS Client service is running?

  - by Mnebuerquo

  I've seen a number of articles about how to edit the hosts file in Windows 7, but it's all about how to open notepad as administrator, not the actual behavior of the dns lookups afterward. I've read that the hosts file is ignored in XP SP2 if DNS Client service is running. I have tried this on my XP machine and it seems to be true. I can see how it is a security danger to have a hosts file that user programs could modify. If it could write to hosts, then any malware could spoof dns locally with minimal difficulty. I'm trying to use the hosts file for testing stuff on my local network without it going to the live site on the internet. At the same time I want to be able to use dns on the normal internet. Mostly though I just want to understand the rules on the newer windows systems. Thanks!

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• Windows 7 Locking Executable Files

  - by James Burgess

  Since I've been using Windows 7 RTM (as opposed to the Beta and RCs), I've been having a peculiar issue with executable files. I first noticed it whilst using Visual Studio, in that when building a project, it would often fail saying that the output file was locked - but the problem has stemmed further. When I've executed an application, closed it (cleanly), and attempted to delete/move/rename/overwrite said file, Windows 7 tells me that the file is locked/access is denied. I've made use of software like LockHunter/Unlocker but it is seemingly unable to remove these locks (most of the time, it shows no locks at all). After about 5-10 minutes, the respective files are unlocked again, but needless to say this is a bit of a workflow-breaker (as it's not simply constrained to VS). I've done the usual tasks of virus/malware scanning, and turned up with absolutely nothing. I've got no peculiar services running, and the problem was not present before I installed a Windows 7 RTM version. Any help is greatly appreciated.

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• Folders disappear every timeWindows XP starts up

  - by Reebz

  Whenever my Windows XP machine starts up, subfolders disappear from the first top-level folder, listed alphabetically (eg. from "C:\AA Backups"). The first time it happened I suspected user error (such as an unintentional delete or copy). But I then found it happens on every start-up, sometimes affecting huge numbers of files. Renaming the affected folder (eg to "ZZ Backups") just means that a different folder is affected the next time. Avast found no virus or malware that would seem to be responsible. The missing files are not visible to an undelete utility such as NTFSUndelete. Running "chkdsk/f" found no problems and did not fix the problem. File permissions also appear corrupted - a few files which should be accessible are missing "read" permission. What's happened to this machine?? Any ideas or reports of similar experiences would be most welcome.

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• Running System Center Configuration Manager on a Domain Controller

  - by Brent D

  We are a smallish educational network (about 70 clients) with a single server running Windows Server 2008 Enterprise, functioning as both domain controller and file server. The educational pricing for Microsoft Forefront Endpoint Protection 2010 is irresistible as a managed anti-malware solution, but it requires System Center Configuration Manager 2007. I know best practice is not to run System Center Configuration Manager on a domain controller, but it's the only server I have to work with. Will installing SCCM on a domain controller cause problems? What conflicts might I need to take into account when planning deployment?

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• Delete temporary files from batch script in xp

  - by Keith Bentrup

  I'm looking for a good batch script that would quickly find & clean all the known safe temporary folders/files from Windows (as many variants as possible) machines (e.g. the windows temp folder, all users IE temp folders, etc.). I'm fond of UI tools like CCleaner (over Cleanmgr.exe), but when I'm trying to clean several computers quickly and/or with minimal involvement, it would be nice to have a script. Plus with a script, I could chain several scripts together. Maybe one to then fire up various antivirus and/or malware detectors. Anyone have a good one or can point to a good resource?

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• Connection reseted- error 101

  - by Maja

  I have a problem with internet connection- when i try to load website, it will always write this error:Error 101 (net::ERR_CONNECTION_RESET): Connection was reseted. I'm using Win7 64 bit and I have this router: asus rt n10. First, i tried to change MTU from 1504 to 1472 and it worked for a while, but yesterday it started again. Now I have MTU 1440 but I don't want to lower it more. Is there another solution? Btw I have no malware in my laptop (I used the avast scan) and I've also deleted cookies and disabled proxy server (I'm not using any).

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• Downloads speed starts ok but after a few seconds they go down to 10kbps?

  - by peterg

  Since yesterday any file I try to download from any host start downloading ok (at 1mbps) but after a few seconds the speed start to decrease down to 10kbps. I use a mobile modem (huawei) and I connect to a wcdma network. What could be happening? I use kaspersky, and I checked the Network Monitor and I don't see any weird process using bandwidth. What other tests can I run? Recommend me some app to monitor the traffic to see if I have some malware or see where my bandwidth goes.

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• unexpected trash contents

  - by Foye Lowe

  As I was proceeding to empty the trash on this machine (Mac OS X version 10.6.3), a listing of thousands of items began accumulating. Trash itself shows some 237 items, many of them folders labeled as, for example "com.apple.AddressBook". I am certain that I did not send the bulk of these items to trash. Is it possible that one of the periodic Software Updates has eliminated files by sending them to Trash? Or have I picked up some malware which has sent important stuff to trash? Thanks.

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• Windows 7 login automically puts "IIIII....." in password, so it is impossible for me to login?

  - by xaisoft

  I have no idea why this is happening. I have ran multiple malware programs, I have run anti-virus programs, I even restored to an early point in time. The keyboard letter "I" doesn't appear to be stuck, I am using an external keyboard by the way. When I reboot the computer and get to the login screen, when I press ctrl-alt-del to login, it the password textbox starts putting "IIIIIIIIIIII......", it only stops when I bang on the keyboard. I also noticed at one point that my caps lock on turned caps off and caps lock off turned caps on and some other weird behavior. I have tried search online for similar issues, but no luck.

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• What are possible causes of keyboard lag on my desktop machine?

  - by Jer

  I am running Windows 7 and began experiencing keyboard lag in most applications, and it seems to be getting worse. Certain websites are the worst - on some, I can type a sentence, take my hands off the keyboard, and watch the characters continue to appear on the screen for several seconds. Others are not as bad, but still noticeable and annoying. I just started noticing it in non-browser applications (e.g. Outlook) as well. I've disabled all extensions in Firefox, rebooted my machine, and that did nothing. There is nothing using much memory or cpu cycles, even when the lag is occurring. This is a machine at work with very strict controls over what can be installed, so the chances of any kind of malware are very slim. I don't believe anything as been installed since before the problem started. What could be causing this, and/or what can I do to debug?

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• Windows 7 random black screen when idle

  - by Omar

  Occasionally, when I'm away from my computer for about 5 minutes, the computer screen will go black and all USB devices (keyboard/mouse) will lose power. Attempting to move the mouse or pressing keys does not 'wake up' the computer. This only started happening a few days ago but I'm not sure what changes I did could have caused this and I uninstalled programs (one by one) I installed before it started happening, but still having the same issue. The one thing I noticed different about my computer since it started happening is i've been getting random survey popups from www.insightexpress.com. I ran Microsoft Security Essentials scan, it picked up some Java related malware, I removed it but still the same issue. I'm running MBAM right now and will run SAS after. Edit: I just updated drivers for motherboard and video card and ran virus scans, still having the same issue.

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• What is the recommended way to empty a SSD?

  - by Lekensteyn

  I've just received my new SSD since the old one died. This Intel 320 SSD supports TRIM. For testing purposes, my dealer put malware, err, Windows on it. I want to get rid of it and install Kubuntu on it. It does not have to be a "secure wipe", I just need the empty the disk in the mosy healthy way. I believe that dd if=/dev/zero of=/dev/sda just fills the blocks with zeroes and thereby taking another write (correct me if I'm wrong). I've seen the answer How to enable TRIM, but it looks like it's suited for clearing empty blocks, not wiping the disk. hdparm seems to be the program to do it, but I'm not sure if it clears the disk OR cleans empty blocks. From its manual page: --trim-sector-ranges For Solid State Drives (SSDs). EXCEPTIONALLY DANGEROUS. DO NOT USE THIS OPTION!! Tells the drive firmware to discard unneeded data sectors, destroying any data that may have been present within them. This makes those sectors available for immediate use by the firmware's garbage collection mechanism, to improve scheduling for wear-leveling of the flash media. This option expects one or more sector range pairs immediately after the option: an LBA starting address, a colon, and a sector count, with no intervening spaces. EXCEPTIONALLY DANGEROUS. DO NOT USE THIS OPTION!! E.g. hdparm --trim-sector-ranges 1000:4 7894:16 /dev/sdz How can I make all blocks appear as empty using TRIM?

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• Can't access internet even though everything is working

  - by entity64

  A friend recently upgraded to a new cable internet connection. The modem connects to the router and various PCs and smartphones from her roommates connect to the router. They don't have any problem accessing the internet. She has Windows 8 and can't access any website (via wifi and ethernet). DNS (UDP) is working, DHCP set up everything correctly, Wifi is working, Trace routes and Pings (ICMP) go through with no problem at all. But neither Dropbox nor Skype nor Spotify nor any browser (all TCP) can access any website. The thing is though, she can connect through the university wifi and via a neighbors wifi. It's just her home connection. No firewalls are running and the computer is clean - no malware. How could it be that only her home connection won't work and others do?

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• Why is Chrome receiving data?

  - by Aero

  Chrome seems to be continually receiving data even though I'm not downloading anything. This is making a noticeable impact on my browsing speed. The first screenshot shows Chrome receiving data even though I'm not downloading anything (nor buffering a YouTube video etc.) Even after I completely close Google Chrome, the "chrome.exe" remains in the Resource Monitor list and the "Received bytes" column continually increases in the screenshot below. However, "chrome.exe" does not show up in the Processes tab of Task Manager. This only occurs sometimes, but I don't know why. I have tried running a malware/virus scans to ensure that there is nothing malicious behind this, but those scans have shown nothing. Any ideas on what's causing this?

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• Getting error message when trying to start a virtual machine

  - by Sunil J

  I have been using VMWare on Windows for a long time. But after a long wait, I moved to VirtualBox on Ubuntu 11.10. I installed Ubuntu, 32 Bit, installed all available updates and installed Virtual Box. When I try to create a new Windows installation inside VirtualBox, I got the following error messages. 1st error dialogue VirtualBox - Error Failed to open a session for the virtual machine Windows XP.<br> The virtual machine '**Windows XP**' has terminated unexpectedly during startup with exit code 1.<p> Details<p> Result Code: <br> NS_ERROR_FAILURE (0x80004005)<br> Component: <br> Machine<br> Interface: <br> IMachine {5eaa9319-62fc-4b0a-843c-0cb1940f8a91}<p> 2nd error dialogue **Virtualbox - Error in suplibOsinit**<br> **Kernal driver not installed (rc--1908)**<br> Please install the virtualbox-dkmbs package and execute 'modprobe vboxdrv' as root.<p> Steps I tried I have already tried reinstalling VirtualBox. Google result seem to indicate the the problem happens due to Kernel updates. Is there anyway I can get this working? I need this for malware analysis and if VirtualBox is going to crash on me all the time, then I won't be able to use Ubuntu for work. Output to dpkg -l | grep virtual server rc virtualbox 4.1.2-dfsg-1ubuntu1 x86 virtualization solution - base binaries rc virtualbox-qt 4.1.2-dfsg-1ubuntu1 x86 virtualization solution - Qt based user interface cute 'modprobe vboxdrv' as root.<p>

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• Files and folders disappeared from my desktop

  - by Rob

  Suddenly all files, folders and icons that were on my desktop have disappeared. tried making "show hidden files", no luck. tried using recovery software, but it did not find any of this files, so I assume they were not deletes. c:/Users/<myname>/Desktop does look empty from the Explorer, as well as from cmd. installed MalwareBytes, it did find and remove some malware, but it didn't seem to help. used RogueKiller and it did find some suspicious registry called "HideDesktopIcons". ¤¤¤ Registry Entries : 4 ¤¤¤ [HJ DESK] HKCU\[...]\ClassicStartMenu : {59031A47-3F72-44A7-89C5-5595FE6B30EE} (1) -> REPLACED (0) [HJ DESK] HKCU\[...]\NewStartPanel : {59031A47-3F72-44A7-89C5-5595FE6B30EE} (1) -> REPLACED (0) [HJ DESK] HKCU\[...]\ClassicStartMenu : {20D04FE0-3AEA-1069-A2D8-08002B30309D} (1) -> REPLACED (0) [HJ DESK] HKCU\[...]\NewStartPanel : {20D04FE0-3AEA-1069-A2D8-08002B30309D} (1) -> REPLACED (0) I deleted this registry, rebooted, it only unhid My Computer and User icons, but my desktop stuff is still missing — any ideas what should I do next?

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• Catch and identify source of browser launch events

  - by beldaz

  My Windows XP computer is exhibiting strange behaviour, launching multiple browser windows, but not to any URL. Initially this was in Firefox, but when I uninstalled it the same happened in IE. Norton 360 detects no malware, and I wonder if there is some application that is accidentally causing the problem. I'd like to diagnose the problem further. It seems that the default browser is being launched by something, so I'd like to work out the culprit. Is there some method (or handy utility) that can catch requests to XP to launch the default browser, and identify the source?

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• Security considerations in providing VPN access to non-company issued computers [migrated]

  - by DKNUCKLES

  There have been a few people at my office that have requested the installation of DropBox on their computers to synchronize files so they can work on them at home. I have always been wary about cloud computing, mainly because we are a Canadian company and enjoy the privacy and being outside the reach of the Patriot Act. The policy before I started was that employees with company issued notebooks could be issued a VPN account, and everyone else had to have a remote desktop connection. The theory behind this logic (as I understand it) was that we had the potential to lock down the notebooks whereas the employees home computers were outside of our grasp. We had no ability to ensure they weren't running as administrator all the time / were running AV so they were a higher risk at being infected with malware and could compromise network security. With the increase in people wanting DropBox I'm curious as to whether or not this policy is too restrictive and overly paranoid. Is it generally safe to provide VPN access to an employee without knowing what their computing environment looks like?

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• Monitor windows startup process

  - by vlad-ardelean

  My win7 starts up pretty slow lately. I think it's some kind of malware, but my antivirus software doesn't pick up anything. How could i monitor the startup processes myself? It seems to me like either something's doing a lot of work, or some important windows process hangs for a while, since there's stuff that i can do while it's starting (like start a console), and stuff that i can't do (like execute the systeminfo command in the console) So if you happen to know how i can monitor my system, that would be great. Thx, you guys rule.

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• Chrome opens to untitled blank page

  - by jackncoke

  I am working on a computer that had a lot of malware on it. I removed most of it to my knowledge. Now when I open Google Chrome I get a blank untitled page, with the traditional sign-in URL on top. If I go to the settings, the settings tab opens up blank as well. All pages that I navigate to will come up blank as well. The browser doesn't even perform a postback, it is like it is unresponsive. I did some googling and have seen people with similar errors, but no fixes. IE 8 works great without issues. Re-installing Chrome was the first thing I did! Any suggestions?

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• Windows XP: how to disable automatic encryption on downloaded files

  - by T. Webster

  I have Windows XP SP3 and every file I download is automatically encrypted no matter what directory I save the downloaded file in. So it's not as simple as turning off encryption of any specific directory, the file will be downloaded as encrypted regardless of whether the directory is encrypted or not. Is there a policy or registry setting somewhere to disable this automatic encryption? (EDIT: I doubt it's malware since this OS was just installed on this machine. It's my work PC and by default I think there's some group policy or other setting which not only sets everything in My Documents to encrypted, but also everything I download, no matter where it's downloaded to. )

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• Windows Explorer - How can an large file have a zero "Size on disk" value? What does it mean

  - by Jaans

  I would expect some discrepancy between "Size" and "Size on disk" in Windows Explorer due to file system allocations etc. Below is a screenshot of an example file on a Windows 2012 R2 file server that has a 81.4 MB "Size" but for the "Size on disk" it's 0 bytes. What gives? I have other files doing the same, but yet another set of files and folders behaving as expected showing the size on disk relatively close to the actual file size. The volume is a basic disk, formatted with NTFS and the default 4K allocation units. No compression is set for any file or folder on the volume. (For those more paranoid, I did a malware scan, and also confirmed there is not ADS streams associated with the file in question). The user account running Windows Explorer is the domain administrator, and the file owner is also the domain administrator. Thanks for reading!

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