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McAfee Will not Start.

When my PC is started it will not automatically activate McAfee and offers a message -

McAfee Security Centre has stopped working. A problem caused the programme to stop working correctly. Windows will close the programme and notify you if a soliution is available.

If I click on the McAfee programme icon on the tool bar it comes up with the message -

mcagent - Application error. The application failed to initialize  properly (0xc000009a). Click OK to terminate the application.

I tried re-starting the PC which sometimes fixes it but is a real pain to have to do every time.

Can anyone suggest a solution. I'd prefer not to go through the pain of re-loading the programme.


Gwyther Joyce

9 Replies

Re: McAfee Will not Start.

Hi gwytherj,

Try to run McAfee Virtual Technician (MVT) this is an automated self-healing tool that can diagnose and fix many problems related to your McAfee product.

You can download and run McAfee Virtual Technician (MVT) from

Re: McAfee Will not Start.

Have installed and run MVT (twice) without any effect, McAfee will not start. I get same error messages.

Can you suggest any other ideas please.

Thanks Gwytherj

Reliable Contributor Hayton
Reliable Contributor
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Message 4 of 10

Re: McAfee Will not Start.

The 0xc9a error is one which we have seen a lot this past week, and running MVT usually does fix the problem. As Jai Prakash has responded to your first post I will give him the opportunity to suggest any further action you could take. You may need to use the Support option, but Jai will advise you on that.

Re: McAfee Will not Start.


It appears like this issue needs some more diagnostics, I have sent you an e-mail requesting for more details on the same. Kindly have it replied so that we can help you better on this issue.

Re: McAfee Will not Start.

Hi gwytherj,

Kindly update me on the Current McAfee Product Status once after updating it.

Re: McAfee Will not Start.

Thank you Jai, really great service in correcting the problem with my pc. McAfee products are all working normally now.

Thanks again, Gwytherj

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Message 8 of 10

Re: McAfee Will not Start.

hello jaiprakash ive started having the same problem aswell, ive tried to use MVT but it cant seem to find no products the error message 0xc000009a keeps coming up, help please


Re: McAfee Will not Start.

Hi Seshi,

Use the below link to remove all the installed McAfee products:

& you can reinstall the McAfee software back from

Re: McAfee Will not Start.

McAffee has now provided a solution to this problem. Please follow the link -

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