Lookng for a fix for: "Could not perform this operation because the default mail client is not properly installed".

Every now and then when I click something in a website, I get this message and eM Client starts creating 70 Windows. I’m running Win 7 Ultimate 64-bit.

Can any of you tell me why this happens and how to fix it?

Thanks in advance.


Carl form Holland

Hi Carl, what version of eM Client are you currently using on your computer, can you please make a screenshot of the error?
What browser are you using on your computer, are you using Internet Explorer?

If you do, please send me an email with a reference link to this forum topic, and I will send you a quick fix for this issue.

Thank you,

Me too - I never had this problem with my old laptop but I have installed eM Client to new laptop (W7 64 bit) and when I click on a link on the web I get this message, then endless pages open and IE11 locks up.  I would really appreciate some guidance.  I should add that I have been though the default setting process and eM Client is set for all defaults.  I have just replicated this and it has given the message and then opened 67 IE windows saying “navigation cancelled”.  Help!

Many thanks

Hi Simon,

We’ll see what answer they come up with.

Hi Simon, this is unfortunately an Internet Explorer issue, can you please send me an email to mcgregor@emclient.com with a reference link to this forum topic, I can send you a quick fix file for the issue.


Many thanks Paul, delighted to have this sorted

Fucking great, I reported the problem but Paul hasn’t bothered to provide me with a fix. At least now I know the level of eM Client support and what not to expect.

Unnecessary language.  Paul asked you some questions - did you go back?  I have to say I have always found eM Client help through this forum to be excellent given that the version I use is free.

I paid for my versions.

Hi Folks. I’ve posted this solution a few times already. Here is a definitive fix to what is a Windows issue that occasionally comes up, especially on new installs. Please give it a try and let us know!


Hi Carl, not completely sure what you’re referring to, I’ve answered your question, but even though I’ve forgot to add my email address to the post, you haven’t replied. If you’re having issues with this, please download and run this quick fix for this issue, http://www.emclient.com/tools/mailto.zip .

As a PRO license customer you’re also entitled to use the priority support at http://support.emclient.com or at support@emclient.com in case you need a more prompt reply.