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How To Solve xvidcore.dll Not Found Error In Microsoft Windows Vista Environment


Coming directly to the topic of this post, It’s on solving the error message “xvidcore.dll not found” appearing on Microsoft Windows Vista PC. I am writing the solution to this problem as it occured on my Dell Vostro 400 PC loaded with Vista OS and I solved it. Thought of sharing as it may help you in saving some of your time.

Some particulars of this “xvidcore.dll” not found error:

The error “xvidcore.dll not found” was popping up when I was exploring a folder with video file/s (any format – .avi, .mpeg and .flv). When the video files were more, the error kept popping up again and again. Quite annoying as I had to click on OK multiple times to close these popups. I had no problem in playing any of these video files with video players.

xvidcore.dll not found error How To Solve xvidcore.dll Not Found Error In Microsoft Windows Vista Environment

Now, this xvidcore.dll error started popping up suddenly and it was not appearing from the day I started using my PC, i.e., more than one and half years back. I am still wondering why it started bothering me as I never installed anything relevant to xvid (Codec – Code/Decode Or Compressor/Decompressor for video files) on my PC. May be it was in built into some other application.

I searched for xvidcore.dll using the Windows Vista Search feature (including the search for hidden files) but as expected it couldn’t be found. The search window showing xvidcore.dll not found on my Vista PC is shown next:

Xvidcore.dll not found in Vista Search How To Solve xvidcore.dll Not Found Error In Microsoft Windows Vista Environment

I did a google search for the error “xvidcore.dll not found error” and found that I need to install Xvid codec from I downloaded Xvid-1.2.1 codec for Windows Vista from:

(Explanation to some of you who are wondering about the URL change from to Clicking on “Xvid for Windows” hyperlink at the URL: leads to the URL – with page having Download link for Xvid 1.2.1 codec).

I downloaded the xvid codec setup file and installed it choosing the Windows XP compatibility mode as shown below:

Setting XP Compatibilty Mode Of Xvid Setup File For Installation How To Solve xvidcore.dll Not Found Error In Microsoft Windows Vista Environment

After successful installation of Xvid codec, I once again explored the folder with the video files and wow there was no popup of “xvidcore.dll not found” error. Oh! what a relief from the “xvidcore.dll not found” bugging popups. Well, I searched again for “xvidcore.dll” on my computer and found that the file was now¬† there along with some other files relevant to xvid in the System32 under Windows folder.

The screenshots shows the start of installation of xvid, its finish and location of xvidcore.dll file as found by Vista Search after xvid codec installation:

Installation screen of Xvid Codec Setup in Windows Vista Business How To Solve xvidcore.dll Not Found Error In Microsoft Windows Vista Environment

Xvid Codec Installation Finished Screen How To Solve xvidcore.dll Not Found Error In Microsoft Windows Vista Environment

xvidcore.dll file location in windows system32 folder How To Solve xvidcore.dll Not Found Error In Microsoft Windows Vista Environment

Now, if you too are facing the error of “xvidcore.dll not found” (sorry for repeating it numerous times), then you can use the procedure in this post to save your time.

Let me know if I explained the steps well and did this post was of any use to you.

So bye to “xvidcore.dll not found” error message and welcome to your comments!


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Tags: solution to xvidcore.dll not found problem, xvid codec, xvid codec download, xvid codec installation, xvid details, xvidcore.dll, xvidcore.dll not found error

This entry was posted on Wednesday, May 13th, 2009 at 8:50 pm and is filed under MS Windows Vista, System SW, Troubleshooting. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

39 Responses to “How To Solve xvidcore.dll Not Found Error In Microsoft Windows Vista Environment”

Stephen Rattray June 1st, 2009 at 4:15 am

:lol: At last you have help me solve the same problem as you have. I Thank you so much it was getting me down trying to explore my media files and could not.

I Thank you


rajeshmago June 1st, 2009 at 8:56 pm

@ Stephen: My pleasure to know that this post on “solving xvidcore.dll not found error…” helped you. The primary aim of my blog is to assist people in solving day-to-day computer issues and I am glad that I am able to do it to some extent!

sajjad August 22nd, 2009 at 6:47 am

hello,thanks alot for your help ;-)

HateDLLErrors September 22nd, 2009 at 1:21 pm

grrr, i seriously hate dll errors

Daniel Peters October 24th, 2009 at 9:56 pm

Thanks alot… Finally fixed this bugger

Ranjith malawaraarachci November 4th, 2009 at 10:16 am

:lol: thank you very much for your help. that trouble had been very annoying.thanx again. :lol:

don November 5th, 2009 at 9:15 pm

thanks ….lets see how its workk..

whatever December 7th, 2009 at 9:05 pm

installing new software isnt a fix, the fix would be knowing why it started doing it in the 1st place..

rajeshmago December 7th, 2009 at 9:38 pm

@whatever: Since, installing free Xvid codec solved this issue without any hassles, I did it. Had it been a major or repeated issue, I would have troubleshooted it step by step by analyzing its root cause. This error has never appeared again on my PC after months, so I didn’t do the root cause analysis. If the same error appeared at your PC, kindly share the investigation done by you. Thanks

SA January 6th, 2010 at 2:23 am


ole January 6th, 2010 at 2:41 am

Tks mann.-) so far so good. appriciated.

Jyoung January 11th, 2010 at 5:08 am

Thanks for easy to follow info. I did a google search, scrolled down the list and clicked on your site 1st. So glad I did!!!

MICHELLE February 3rd, 2010 at 8:13 pm


rakesh February 16th, 2010 at 9:21 am

thank u buddy… worked greatly on my vista……… perectly fixed the error…

vijay March 26th, 2010 at 12:59 am

thanx buddy, u saved the day!!

Sam April 17th, 2010 at 3:44 pm

Thanks a lot Rajesh. It solved a very long standing problem in my Dell Machine.

rajeshmago April 17th, 2010 at 10:09 pm

@Sam: Good to know that this post was of use to you :)

Brenda April 25th, 2010 at 6:16 pm

Thank you thank you!!! at last my problem is solved your the best : :grin:

jain April 26th, 2010 at 1:32 pm

:grin: i really appreciate for ur help thanx :lol:

Frank May 14th, 2010 at 7:18 pm

Thank you, thank you, thank you. It worked.

Sudhir May 30th, 2010 at 9:34 am

Thanks a lot sir

miranda June 11th, 2010 at 7:53 am

you are a genius thankyou

vaibhav June 12th, 2010 at 6:20 pm

Thanx a ton sir….really was facing this problem from long time….search many times on net but couldn’t found the relevant solution….once again thank u…

uma mudi June 12th, 2010 at 9:47 pm

yap it was worked.really i faced a lot of problem due to this’xvidcore.dll is not working’. thank you very much and it was clearly explained how to perform the tasks.
thank you again

rajeshmago July 20th, 2010 at 7:30 pm

@RB: Yes, I was able to play videos but there were popups of xvidcore.dll not found. I am not clear about which video file you are playing and with which video player?

Anita July 31st, 2010 at 4:31 pm

Thankyou soooooo much!!

RICHARD August 16th, 2010 at 1:50 pm

thank u atlast i solved it by your valuble solution

Parthiban October 11th, 2010 at 9:05 pm

:roll: Thanks alot my friend…. You solved my problem.

Teena Sheen October 27th, 2010 at 1:58 am

Thanx! Problem Solved!

SANJAY November 19th, 2010 at 6:26 am

thanks a bunch buddy , u made my day ….

pati January 6th, 2011 at 3:55 am

thank you!!! yu’re the best!!!:)

Charlie January 25th, 2011 at 2:13 am

Yes bro, thanks for help!

UMESH SHARMA RCA,MPUAT,UDAIPUR,JOBNER April 17th, 2011 at 12:17 am

first of all i was thinking that i should format my pc but when i searched xvidcore.dll not found problem on google and findout the solution then i got relief from a great tension so thank very very much for guiding us

Doinitsa April 21st, 2011 at 6:41 pm

Thank you so much! This was helful! ;-)

Ads May 8th, 2011 at 9:14 am

Thank you. Very straight forward, and it works!! Wish everything was that simple online. Thank you for your help.

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