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Could you point how to stay free of this Outlook 2007 insistent message?

Hi Experts

Could you point how to stay free of this Outlook 2007 insistent message?

img010
That means:
There is no default email client or the current email client cannot respond to the message request. Run Microsoft Outllok and set it as your default email client.

What I have done:
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And Outlook diagnostics:
img013
Resulted : no problems:


Thanks in advance!
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Jackie Man IT Manager
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Distinguished Expert 2019

Commented:
When do you see the message?
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Most Valuable Expert 2013
Commented:
See this similar issue in Outlook 2007
https://answers.microsoft.com/en-us/msoffice/forum/all/either-there-is-no-default-mail-client-or-the/ff9609f7-41b1-47d9-9bf2-d4e8c8cca225

Suggested fix copied in full below:


1.Make sure that the following Control Panel file exists and that it works as expected:
Drive:\Program Files\Microsoft Office\Office12\MLCFG32.CPL

2.Click Start , click Run , type regedit, and then click OK .

3.Locate the following registry subkey (if not exist, create it):
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Control Panel\Cpls
   
4.Make sure that the mlcfg32.cpl registry entry exists. Additionally, make sure that its value is set as follows:
Drive:\Program Files\Microsoft Office\Office12\MLCFG32.CPL
If the mlcfg32.cpl registry entry does not exist, you must create it. To do this, follow these steps:
a. Right-click the Cpls registry subkey, point to New , and then click String Value .
b. type mlcfg32.cpl as the name of the registry entry.
c. Double-click the mlcfg32.cpl registry entry, type Drive:\Program Files\Microsoft Office\Office12\MLCFG32.CPL in the Value Data box, and then click OK .
   
5.Exit Registry Editor, and then open Control Panel. The Mail icon is displayed as expected. Double click to make sure you can open it. The e-Mail Accounts button will not work at this stage if you click it.

6. Rename msmapi32.dll in [Drive]:\windows\system32 folder.

7. Remove the entry for the [HKEY_CURRENT_USER\Control Panel\MMCPL] key as Office 2007 uses a different mlcfg32.cpl file . I made doubly sure I was using the correct CPL. Make sure the CPL still runs. It does open, but if you click on the E-Mail Accounts button, nothing happens.

8. As a further option, you could

            regsvr32 inetcomm.dll

9. Re-boot the machine. Then run repair from the DVD supplied with office, i.e. do not go in to Add/Remove programs, insert the DVD. When this has finished re-boot the PC.
Eduardo FuerteDeveloper and Analyst

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Commented:
Hi MASQ

Applied.

Give me just one or two days to be sure of its effectiveness.
Eduardo FuerteDeveloper and Analyst

Author

Commented:
Thank you MASQ!
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Most Valuable Expert 2013

Commented:
You're welcome, thanks for the testimonial, perhaps I will ...
Shalom!
Eduardo FuerteDeveloper and Analyst

Author

Commented:
Shalom!!!