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DNSAPI.dll is missing


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4 yr old Qosmio laptop, Windows 7, Microsoft Security Essentials


On 10/31, working on a downloaded Lesson file in Dreamweaver in conjunction with the associated video, I received a notice that I needed to something like "update video" - I probably clicked the corner X.  Then MSE blasted in red, Severe threat! - I did a scan and two items were listed; I deleted them. I'm not sure of the exact sequence, but shortly, I could not open Firefox, IE, my free version of Malwarebytes or MSE.



I deleted suspicious folders and files and removed programs in the Control Panel, such as RinoReader and something like VideoCinema.  A couple of times, a rogue browser roared open.  When I click on All Programs I saw DNSproxyserver or proxybrowser at the top but didn't delete it because I don't know if it's good or bad.   


Secondary concern:  I copied my huge document folder (wpd, txt, doc in that order with many graphics) from the infected laptop onto a flash drive, pasted it into my new desktop (8.1 upgraded to 10), and deleted it from the infected laptop.  Fearing this could have infected my desktop, I purchased Malwarebytes Premium, installed it, and ran a scan which showed no threats.  However, the next day I discovered that Malwarebytes Premium is not working as to real-time coverage or scheduled scans, and I don't know if this is related or not related to the laptop virus. I know it probably wasn't a smart thing to do, but a comment as to how likely it is to have cross-infected would be be appreciated.


Hereafter, I'll be briefer.



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They call me TwinHeadedEagle around here, and I'll try to help your with your issue.




Before we start please read and note the following:

  • We're primarily oriented on malware removal here, so you must know that some issues just cannot be solved and you must be prepared for this. Some tools we use here will remove your browser search history, so backup your important links and all the files whose loss is unacceptable.
  • Limit your internet access to posting here, some infections just wait to steal typed-in passwords.
  • Please be patient. I know it is frustrating when your PC isn't working properly, but malware removal takes time. Keep in mind that private life gets in the way too. Note that we may live in totally different time zones, what may cause some delays between answers.
  • Don't run any scripts or tools on your own, unsupervised usage may cause more harm than good.
  • Do not paste the logs in your posts, attachments make my work easier. There is a More reply options button, that gives you Upload Files option below which you can use to attach your reports. Always attach reports from all tools.
  • Always execute my instructions in given order. If for some reason you cannot completely follow one instruction, inform me about that.
  • Do not ask for help for your business PC. Companies are making revenue via computers, so it is good thing to pay someone to repair it.
  • If I don't hear from you within 3 days from this initial or any subsequent post, then this thread will be closed.
:excl: I can't foresee everything, so if anything not covered in my instructions happens, please stop and inform me!

:excl: There are no silly questions. Never be afraid to ask if in doubt!




  warning.gif Rules and policies


We won't support any piracy.

That being told, if any evidence of illegal OS, software, cracks/keygens or any other will be revealed, any further assistance will be suspended. If you are aware that there is this kind of stuff on your machine, remove it before proceeding!

The same applies to any use of P2P software: uTorrent, BitTorrent, Vuze, Kazaa, Ares... We don't provide any help for P2P, except for their removal. All P2P software has to be uninstalled or at least fully disabled before proceeding!


Failure to follow these guidelines will result with closing your topic and withdrawning any assistance.



Please download Farbar Recovery Scan Tool and save it to your desktop.

Note: You need to run the version compatibale with your system. If you are not sure which version applies to your system download both of them and try to run them.

Only one of them will run on your system, that will be the right version.

  • Double-click to run it. When the tool opens click Yes to disclaimer.
  • Press Scan button.
  • It will make a log (FRST.txt) in the same directory the tool is run. Please attach it to your reply.
  • The first time the tool is run, it makes also another log (Addition.txt). Please attach it to your reply.
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  • Create a new post.

Choose "More Reply Options" on the bottom Right of the Web Form

Now choose "Attach Files" on the bottom Left of the Web Form.

Browse and find your ZIP, RAR, TXT, LOG, JPG, PNG or other file(s).

Choose "Add Reply" and there's your post with your attachment(s)

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FRST.gif FRST search

Once again we shall use FRST for additional checks. Re-run FRST/FRST64 by double-clicking:

  • Copy dnsapi.dll into the Search: field in FRST then click the Search Files button.
  • FRST will search your computer for files and when finished it will produce a log Search.txt in the same directory the tool is run.
  • Please attach it to your reply.
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FRST.gif Fix with Farbar Recovery Scan Tool


icon_exclaim.gif This fix was created for this user for use on that particular machine. icon_exclaim.gif

icon_exclaim.gif Running it on another one may cause damage and render the system unstable. icon_exclaim.gif


Download attached fixlist.txt file and save it to the Desktop:


Both files, FRST and fixlist.txt have to be in the same location or the fix will not work!

  • Right-click on FRST.gif icon and select RunAsAdmin.jpg Run as Administrator to start the tool.

    (XP users click run after receipt of Windows Security Warning - Open File).

  • Press the Fix button just once and wait.
  • If for some reason the tool needs a restart, please make sure you let the system restart normally. After that let the tool complete its run.
  • When finished FRST will generate a log on the Desktop, called Fixlog.txt.
Please attach it to your reply.


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I'm able to open Firefox and IE.  I can get to things like MapQuest, Bing, but it appears that anything related to sound is not working.


WCPE "Listen Now" produces ads instead of music.


Same with Youtube and Netflix - ads.


I did not click on MSE for fear of a repeat attack.


With regard to sound, I mentioned somewhere that yesterday I received a message that the sound system was off, and I thought possibly I had accidentally deleted a file or folder it needed.

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Very good. Let's scan for remnants:
51a46ae42d560-malwarebytes_anti_malware. Scan with Malwarebytes' Anti-Malware
Please download Malwarebytes Anti-Malware and save it to your desktop.

  • Install the progam and select update.
  • Once updated, click the Settings tab, in the left panel choose Detection & Protection and tick Scan for rootkits.
  • In the same tab, under PUP and PUM detections make sure it is set to Treat detections as malware
  • .
  • Click the Scan tab, choose Threat Scan is checked and click Start Scan.
  • If threats are detected, click the Apply Actions button. You will now be prompted to reboot. Click Yes.
  • Upon completion of the scan (or after the reboot), click the History tab.
  • Click Application Logs and double-click the Scan Log.
  • At the bottom click Export and choose Text file.

Save the file to your desktop and include its content in your next reply.

adwcleaner_new.png Fix with AdwCleaner
Please download AdwCleaner by Xplode and save the file to your Desktop.
  • Right-click on adwcleaner_new.png icon and select RunAsAdmin.jpg Run as Administrator to start the tool.
  • Accept the Terms of use.
  • Wait until the database is updated.
  • Click Scan.
  • When finished, please click Cleaning.
  • Your PC should reboot now.
  • After reboot, logfile will be opened. Copy its content into your next reply.

Note: Reports will be saved in your system partition, usually at C:\Adwcleaner

FRST.gif Scan with Farbar Recovery Scan Tool
Please re-run Farbar Recovery Scan Tool to give me a fresh look at your system.
  • Right-click on FRST.gif icon and select RunAsAdmin.jpg Run as Administrator to start the tool.
    (XP users click run after receipt of Windows Security Warning - Open File).
  • Make sure that Addition option is checked.
  • Press Scan button and wait.
  • The tool will produce two logfiles on your desktop: FRST.txt and Addition.txt.

Please upload them into your next reply.

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When I clicked on Download Free Malwarebytes first, I got ads.


When I used the URL of the link you posted, I got to the Products page okay.


I clicked on the Free version in the list.  The usual Download arrow upper right did not appear.


Instead, across the bottom in a gold band, it says "Do you want to run or save mbam-setup 22.0.1024exe (21.8 MB) from

data.cdn.mbamupdates.com?"  Is that okay to click on?

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