Error C-186

It specifically happens is that from within an Invoice, they click Email, and the C=186 error pops up. They hit the OK button on the error message, and a screen appears asking for the email address and password so that QB can send through the email account. However, even when the correct address and password is entered, that same email/pw screen pops up over and over, and it says the email address or password is incorrect.

For More Assistance: QuickBooks Enterprise Support Phone Number



  • QuickBooks tried to add a new item to a pick list but the item text was too long.

  • Problems adding information to a pick list.

  • Try adding name again this time make name shorter.


You should be able to email estimates through your QuickBooks Enterprise 17.0. Let’s try to remove all the email settings that save in QuickBooks. Then, set it up again. If this doesn’t work, you can contact our Technical Support team for assistance. They have more tools, like screen sharing, that’ll help you investigate further.

Here’s how:

  1. In your browser,

  2. Choose your QuickBooks Product.

  3. On the Contact Us page, click on your issue/topic.

  4. Click the Green phone button to see the support number.


Keeping a check on when and where this error occurs is an important piece of information in troubleshooting the problem. If you are still facing the QB Error 6150 then you can visit our Contact QuickBooks Technical Support. You can dial out toll-free number +1-855-441-4417 for a technical support. Our trained and certified support staff will help you resolve your error instantly.


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