How To Fix malwarebytes error cocreateinstance class not registered, no exe running,cant run OTL

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A mistake or inaccuracy, an error is caused about by committing miscalculations on the things that you do. It is a state of having a wrong judgement or conception in your conduct that allows catastrophic things to happen. In machines, error is a way to measure the difference between the observed value or the computed value of an event against its real value.

It is a deviation from correctness and accuracy. When errors occur, machines crash, computers freeze and softwares stop working. Errors are mostly unintentional events to happen. Most of the time, errors are a result of poor management and preparation.

EXE errors occur for a number of reasons but mostly due to problems with the executable files or the EXE files. EXE is the extension of an application in Windows. Similar to the other types of files integral to your computer system, EXE files can run into errors every now and then. Some errors are common but some are hard to troubleshoot and fix.

The softwares you use and the applications required to run by the operating system use EXE files to accomplish their tasks. On that note, a PC contains a lot of EXE files, thousands maybe, that allows a high probability that an error might occur. Sometimes, EXE errors can make an impact in your computer system. Programs may stop working, or your PC can slow down. Worst case is, an EXE error can prevent you from accessing and logging into your computer.

Some issues that can cause EXE errors:

  • Viruses, malware, and spyware
  • Invalid, broken, corrupted or out-of-date files or drivers
  • Conflicting entries in the Windows system registry
  • Application Conflicts

From the Forums

A user in the forum details it further:

Ran Vipre rescue and found 64 threat traces but the log said 0 were cleaned. even tried the different variations of rkill per the instructions/guides. cant run OTL. this is a real problem one.

cant figure this out. after that tested and still same problem. Read this thread if you would like help here: READ & RUN ME FIRST Malware Removal Guide  

dont know what to do next. At a loss right now. read the guides. Tried malwarebytes and got the same error i had been getting before i started diagnosing: "error code 80040154" and something about "cocreateinstance class not registered".

What causes malwarebytes error cocreateinstance class not registered, no exe running,cant run OTL

Commonly, if a type of EXE error occurs on a frequent basis there is only one thing you need to perform first before you do anything else - clean the system registry. Chances are, your Windows registry has some corrupt files that need cleaning or repairing. One thing to avoid such types of EXE errors is by using an anti-virus or similar tools. They are your best weapon to fight against EXE errors caused by malware infections.

So, how do you fix an EXE error and avoid future crashes?

  1. Always protect your PC with an anti-virus software program.
  2. Run a registry cleaner regularly to remove and repair corrupt Windows registry entries.
  3. Keep your PC Drivers updated.
  4. Make sure to use a good internet connection to download programs from the internet to ensure that they are downloaded intact and not corrupt.
  5. Avoid accessing suspicious websites and opening emails from unknown sources.


More info on malwarebytes error cocreateinstance class not registered, no exe running,cant run OTL

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"Class not registered" Error when running Windows Explorer

Class Not Registered error how to fix

i can not restart my computer an error comes up, Class Not Registered error, what dose this mean

That's likely a missing or improperly installed COM component. If that fixes it reactivate the software components one by one to see what's causing it and then reinstall that software. I'd disable all software launched as part of the boot process and see if the error persists.

If you can't fix it that way, your fastest option would likely be to reset or clean install windows.
The error is most often the result of an installer screwing up or a registry cleaner removing entries it shouldn't have.

mmc.exe class not registered error

Any ideas on how to fix or re-register? Next see this:
How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7

Haven't had this error since Win 2000, but after installing a clean copy of Windows 7 on my workstation, and a number of programs, when I try to run mmc from the run prompt I get a Class Not Registered Error, which is causing havoc on all my software installations.

IE error: Class not registered

It says, "Problems with this Web page might prevent it from being displayed properly or functioning properly." It lists the Line, Char, Error, and Code, and URL. Any ideas? (By the way, I just tried to run the spell check offered before posting this message, and I got the same error). The vendor that Cox used in delivering internet service (Excite) went bankrupt. I can get to any web page directly, but if I click on anything to take me to another page on a website, many times I end up with an IE warning window appearing.

I have a Compaq Presario Pentium III, using Windows Me. The download/conversion seemed to go smoothly, but I am now having problems when surfing the internet and also with hyperlinks. I've also noticed that if I click on a hyperlink in my e-mail, nothing happens.

We're hooked up using cable internet through Cox Cable. I've tried contacting Cox, but their phone lines are constantly busy, and I can't send them an e-mail, because when I go to their support page, and click on "to send an E-mail", I get the same error message that I'm writing to you about. I suspect that the problem arose due to the conversion, and I don't know if I can do anything to correct it, or if it is a problem inherent in Cox's new service that they need to correct. Cox developed their own service and sent conversion instructions along with a CD.

After Error, it always says, "Class not registered". ...

wmp error "Class not registered"

btw... Anyways, whenever i try to stream videos and stuff, the the thing says buffer then it goes to ready, but nothing happenes, i try to push play and still nothing happenes... i think i might have disabled my system restore so when it says setting system restore point, it doesnt do anything, but thats just my guess...
Im not sure about the error id thingy....

help with this too plx... plz

can anyone help me...

its wmp 9.0

o and also, i try to upgrade to windows media player 10.0 it downloads and installs and everything, but then it still looks like windows media player 9 it even says so on the about menu... so if theres anyone out ther that can help...

Class not registered Error

Google Chrome runs fine. Any ideas on how to fix this?

Sorry for the delay in a response
white click the microsoft flag left of taskbar
presuming it is windows 8.1
cmd prompt admin
at the prompt type
regsvr32 ExplorerFrame.dll

press enter
exit cmd window
reboot and try again
If that does not work go back to cmd prompt admin and type
sfc /scannow

press enter

what please does that report.

When ever I try to open Internet Explorer I get the following error: Class not registered.

error: 80040154 Class not registered

I've also been trying to fix the problem myself searching Google with some error messages.I can't tell you what steps I've taken to try fix the problem (sorry)The author of the software says nobody else is getting errors so I'm guessing the problem is on my side.I also installed/run a program called Process Monitor from Sysinternals.Trying to figure out if I could spot the error but it's way over my head.ThanksCraig

Worth A Look, IMOLouis

It also has an option to generate an excel report.But when ever I click to save/generate report I get the following error. I'll type it out and also attach image of the error pop-up.mscorlibRetrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).I've had some other strange problems too, uninstalling IE9 and running windows update fixed them.

Command error: Class Not Registered

when i access command in my computer, and i enter any keyword EX. tasklist, taskman, cleanmgr, etc. any help will be highly appreciated.

an error comes up that says ERROR: Class not registered, and the when i click ctrl+alt+delete task manager come up like its supposed to but when i click on the process tab under user name it doesnt say nothing al all, its blank, before it used to say the user that was logged in but now i dont know what happened that nothing comes up, the only process that says soimething is System Idle Process which under the user name column says system.

Outlook 'Class Not Registered' Error

Anyone any thoughts on how to fix this please?

ImageGrebber II Class Not Registered Error

I can watch videos with GOM Player & WMP fine Imagegrabber II is the problem

When trying to open a video in Imagegrabber II I get class not registered error how do I fix this just got this error and I have no idea how to fix this?

Class not registered (0x80040154) error

Internet connection was getting very slow, this coincided with my external hard drive getting full with backups so I deleted all of my vista backups, just leaving my Bullguard backups. Hope you're able to find a solution there. G
Went to restart doing vista backups but kept getting error message "There was an unexpected error: Class not registered (0x800401540" Tried to open system restore to restore to an earlier time but I get the same message.Any ideas???

Similar error message posted at Microsoft & its forums click here.

Error message: no class not registered

Please Help? I can't open my pictures, screenshots etc. I am able to open word documents.

Class not registered error while trying to run .jar files

Any solutions? I've tried a lot of the commands people say to put into the command prompt, but it doesn't help. I was trying to run a normal .jar file that I just downloaded and I got the "Class not registered".

explorer.exe class not registered error

the past days I've had this problem were windows apps don't open start menu doesn't open edge also doesn't open win store,settings, etc and all of them say when try to open them it tells me explorer.exe class not registered but downloaded apps like steam crome etc work fine what do i doooo!!!

DCOM got error. class not registered

class not registered". Kindly guide me. Kindly guide me.


DCOM got error. I am getting the error in the event viewer of my server "DCOM got error. I am getting the error in the event viewer of my server "DCOM got error. class not registered


I am using windows 2000 server.

I am using windows 2000 server. How to settle the issue? class not registered". How to settle the issue?


i get 'Class not registered' error in show picture

I have problem with showing pictures recently , it will not show any pictures i get 'Class not registered' error
anybody have any idea?

OLE error code 0x80040154. Class is not registered.

Suggest you download the free Revo Uninstaller


Uninstall the dictionary program with that. Class is not registered). Just in general terms, you are getting that error because something (either a DLL or an OCX) has not been entered into the Windows Registry and so it can't be located.

You can try and find it and register it manually, but the easiest thing you could do is uninstall and reinstall the dictionary program. Welcome to Seven Forums maanishahzad. Please give me solution......! A Guy

i m using Win7 Ultimate 32-Bit, i installed Cleantouch Dictionary V.5 but when i try to run that error show (OLE error code 0x80040154. Then try a fresh install.

IE9/Outlook2010: General error. The URL is: ..... Class not registered

The URL is: http://www.blablabla...... Consequence:
It is not possible to open a website from the email. Welcome to Seven Forums Wim44.

See if that works. Class is not registered. Tips/advise to solve issue appreciated. Try this:

Start> In search box type Set your default programs> Enter> When the list loads, click on Internet Explorer> Choose defaults for this program> Under Protocols section check the boxes next to HTTP and HTTPS> Save> OK

Restart your PC.

A Guy

Windows 7 Home Premium x64
Most recents updates applied. Office 2010 Outlook

When email is opened and a weblink in the email is clicked

Microsoft Outlook 2010 responds:
General error.

Catalog Error - 80040154 - Class not registered

I was just running windows updates for Office 2010 and when the computer rebooted I got an error about a COM class factory (see attached). Well, after much messing about, I did a system restore to a time prior to recent windows updates and everything is running smoothly again. All Windows updates have been applied.

FixIt for Windows Updates did not find any issues. So I tried to open Component Services and I got a Catalog Error when browsing into COM+ Applications. MSE says I have no viruses, as does MalwareBytes.

I hope this is the right place to post this.

How might I fix these issues?

(Toshiba Ultrabook - Windows 7 Pro)

PSSFC /SCANNOW did not find any errors. Next step will be to perform the updates yet again and see what happens.

Class not registered (0x80040154) error on backup

I've just gone in to ask it to save and it can see the HP harddrive but when I choose to save it comes up with the 'Class Not Registered (0x80040154)" error and doesn't back up. click here='Class+Not+Registered+(0x80040154)%22+error&rlz=1I7GGLD_en-GB&ie=UTF-8&oe=UTF-8&sourceid=ie7&redir_esc=&ei=XxOzTK7jAsvLswbV2NmvDQ

I've added a new HP Simplesave harddrive to backup my PC (running on Vista).

Our Freeagent drive previously backed up automatically but this one doesn't.

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