I got the same error message as Summerbreeze re: "CoCreate Instance...MyYahooDll failed. Please help us!

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Thank you for the tip about the mnstr files. It worked. Vladimir Amarante Brazil

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I also had the error: "CoCreate Instance Failed" when clicking the desktop and trying to access properties. Cancelling the message would allow me to continue. I had recently installed my Diamond Monster II drivers. The drivers were still installed but the tab for my driver settings was missing on the properties dialogue. I simply reinstalled the drivers and my tab reappeared and the error message was gone. BTW - Thanks for the tip, I would not have noticed that my tab was missing had it not been for the talk about deleting the monster drivers from the system files. Thanks again, D. Christie

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Every time i start cocreate and click with the left mouse button on the menu (or anywhere else in cocreate) the process hangs completely. Does anybody know why? System: HP Kayak XA - WinNT4 - Cocreate

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Thanks for the fix Pumfutter! I have a Monster Voodoo II and recently installed the 3dfx reference drivers and was getting the message cocreate instance failed...class not registered. I had to do a search on the web and I finally came across this message board. Thanks again!!!

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This message is also caused by downloading a program known as "NETSONIC". The program sucks anyway and I unstalled it.

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O' Gods of hardware.... thank you so much for the fix. this damn cocrateinstance was driving me nuts! Cant believe it was that simple...

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I have one problem how to solve it:- 1. Cocreate instance failed for my yahoo DLL failed. How to fix it up Do reply early please

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I've got the same message appearing and the same probable root cause. I just upgraded from a welded on ATI AGP video card to a PCI Voodoo3 2000 and found this little gem seemingly included as a bonus (i.e., instead of a free game). I try to ignore it, but...

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I also have the welded ATI Rage LT Pro that I've replaced with the 3dfx voodoo 3 2000. How can I get rid of that CoCreatedInstance Failed -- Class Not Registered message?

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I keep getting this cocreateinstance for the my yahoo dll failed also.. can someone please help us with this... I want my pager back...

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Deleted mnstr2pl.dl_ file and the problem was fixed ?

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Thank you so much Pumfutter! After upgrading from a Matrox G200 AGP + Diamond Monster II (Voodoo2) to a new 3dfx Voodoo3 2000 AGP I was also gettin the "CoCreate Instance Failed - Class not registered" error every time I tried to get to Display Properties. After a del *mnstr*.* on my windows/system it's gone and all back to normal! Thanks again.

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I have a problem wiht ClassFactory when I try to use a java register class in a ASP page. Someone can help me? thank you!!

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I am also having the "coCreate Instance for the My Yahoo.DLL failed" error and would GREATLY APPRECIATE some help here! I need my Yahoo Pager working!!! :) PLEASE HELP

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Everytime I try to start my Yahoo! Instant Messenger program, I get the error message: Initialization Error: CoCreateInstance for the MyYahoo DLL failed! When I click 'OK', the box closes, and nothing else happens. I can't start the program!!! --Please Respond, Anyone!!!

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I had the error but did not have a diamond video card. Finally reinstalled windows on top of the existing copy. It now works ok.

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has anyone received a response to their yahoo message regarding cocreateinstance and if so, did it work? like everyone else, i need my messenger back!!!

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I am experiencing the cocreate instance failed initialization error sign. I have tried using "Find" and trying to locate mnstr, but it says there are no files as such. What do I do next?

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Every time I start up my computer a box comes up with the message: Initialization Error: CoCreateInstance for the MyYahoo DLL failed! It does it every time I turn on my computer and once I close the box it is ok but I don't know how to get rid of it. Please help!

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I'm having this problem. What is the fix.

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When the cocreateinstance failure occurs after loading yahoo instant messenger, the fis is to load or upgrade Microsoft Internet Explorer 4 or 5. The software is looking for a file from that. You don't even have to run MS Internet Explorer - Just Upgrade It. You can download it from Microsoft. I loaded it when running a CD that I got with photos that I had processed at walmart. Appears to be a crazy solution, but, it works.

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I already had IE5 running and was getting the error cocreateinstance for the myyahoo.dll and what I had to do to fix was run an older version of the install of Yahoo Messenger, then upgrade... Denise

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sir, i was downloaded yahoo messenger from yahoo site. i was installed on NT 4.0, it gives yahoo messenger icon on desktop. when i was clicked on it(icon), it gives the following message with alert(popup) box: CoCreateInstance for the MyYahoo DLL failed! To avoid this above problem on my system, what should i do? please give me the answer to my problem. i'm waiting for u r reply,

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Every time I start up my computer a box appears with the message. Initialization Error. cocreateinstance for the MyYahoo DLL failed. There are no files beginning with mnst. I NEED HELP. Thanks

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How do I Fix this Problem?

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I also had the display box problem, but luckily someone (Response Number 12 Stephen Le Strange This message is also caused by downloading a program known as "NETSONIC". The program sucks anyway and I unstalled it.) knew how to fix it. Just uninstall netsonic. If you want faster internet service, go to: http://www.freedsl.com/ You get a free dsl modem and service!

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You're a GOD, Pumfutter!!!!!! Thank-you 8^) Worked beautifully!!!!

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Thank you "pumfutter"!!! I tried the "delete all mnstr" references and it worked perfectly! Thanks!

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I got Yahoo messenger to start working by installing Internet Explorer like Russ stated. It gave an error message when I quit, however. This was fixed when I installed MS Word '97, which I bought at a garage sale for $3. I am using Win95 upgrade from Win3.1.

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Please Help Have CoCreatinstance for the My Yahoo dll Dailed what do I do to get rid of this. I do Not want Yahoo instance messenger on my computer . Thank you!

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For those having problems with Yahoo CoCreatinstance for the My Yahoo dll try this: download from the following URL ftp://ftp.microsoft.com/Softlib/MSLFILES/msvbvm50.exe - A pop-up dialog box will ask to save the file. - Make sure that the "save in" area reads "Desktop". - Click the "Save" button at the bottom of the window. - When the download is finished, close all open programs. - Find the file icon on your desktop and double-click it to begin the installation - For each new window of the installation, just click on the "Next" button until you get to the end, which says "Installation Completed", and then click on the "Finish" button. Once the installation is finished, reboot the computer. Yahoo! Messenger should work properly now. If not, please download Messenger again and reinstall it. There is no need to uninstall first. To download and install again, please go to http://messenger.yahoo.com/ and click on the link that says "Windows" under Quick Download. Be sure to save the file to disk, AND save it to the desktop so that it will be easy to find. To save the file to the desktop 1. Click "Yes" when prompted to save the file to disk. A window will appear asking where to save the file. 2. Click the little yellow folder with the up-pointing arrow at the top of this window until it reads 'Desktop' in the white field. 3. Click the Save button. When the download is complete, exit your browser and all other programs. Locate the downloaded file on your desktop (in our case, ymsgr.exe) and double-click it. This will launch the installation process and allow you to use the Messenger. During the Installation process, you will be asked to enter your Yahoo! ID and password. Just enter the same ID and password that you use for other parts of Yahoo, or if you do not have a Yahoo ID, click the button that says "get a yahoo ID".

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everytime i try to sign on it says i have to be on line and i am on line. I want a new id and password please.

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I am being greeted with a pop-up screen that tells me CoCreateInstance for the My Yahoo DLL failed. I tried other suggestions for solving this problem . However, I have not found the proper solution for my problem as of yet. Any ideas?

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I also have the Cocreatinstance for the myyaho.dll failed - message i install vb run before coming to this website . it didnt work just like evrything else ive tryed . i uninstalled netsonic along time ago since the f---in prog didnt work anyway. HELP i nee my yahoo messenger.

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