Here is the full error message: 'There is no email program associated to perform the requested action. Please install an email program or, if one is already installed, create an association in the Default Programs control panel' Observations: 1. Outlook 2007 is my email program and all associations shown in Default Programs appear to be correct.

This appears in the taskbar every few moments and is more of an annoyance rather than any functional problem 3. The message seems to be generated by the Windows Search Protocol Host 4. The issue first appeared after I reinstalled Office 2007 due to a problem with the MSOCache folder Unsuccessful attempts to fix: 1. Ended Search Protocol Host processes in Task Manager 2. Ran Office Diagnostics 3. Repaired Office 2007 4.

Deleted HKEY_LOCAL_MACHINE SOFTWARE Clients Mail Microsoft Outlook (key simply reappeared) 5. Removed Windows 10 Mail/Calendar App I am out of ideas and, as always, I appreciate any suggestions from this high quality forum. Regards, John. Hello Dalchina, Thank you for your thoughtful response. My indexing options for eml files are set exactly like your image. However, indexing options for pst files (yes, that is the file type used by Outlook to store messages, etc.) are set to index file properties only. I wonder it that should be set to index properties AND file contents?

Of note is that the search function within Outlook seems to work just fine; however, I don't know if new massages are being properly indexed. Also of note is that my list of default programs does not identify ANY email program (yours shows Thunderbird). The Windows 10 Mail App did appear here before I removed it. This may be the root cause. Should Outlook appear in this list?

In 'Set Program Access and Computer Defaults', use my current e-mail program is ticked. I wonder it that should be set to index properties AND file contents? That wouldn't be appropriate until you have a program associated with it. If anything, you'd want to deselect indexing of this lacking an email program if you wanted to see if this is related to your message, just for test purposes. My guess is it's something else.

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Aug 30, 2016 - To open a Write new e-mail using mailto association. REGEDIT4 [HKEY_LOCAL_MACHINE Software Microsoft Windows CurrentVersion. Aug 5, 2011 - HKEY_LOCAL_MACHINE SOFTWARE Clients Mail Right click. I have Outlook 2016 set as default in 'Default Programs' and also have it set.

Bear in mind there's also this: and mailto You might find that setting Mail as default initially stops the messages. You could try that, then reinstall Outlook, perhaps.

This might be of interest. In 'Set Associations',.pst appears with a generic page icon and the default is 'Unknown application'. Attempts to change program failed; an error message stated 'The program you have selected (Outlook.exe) cannot be associated with this file type. Choose default applications by protocol didn't display any of the protocols you suggested.

I had previously uninstalled the Mail and Calendar Apps which likely explains that fact. And 1 new piece of information. While attempting to modify the folder structure in the Outlook Navigation pane, this error message was generated: Outlook cannot read the registry information.restart or reinstall. This is a fresh re-install of Office 2007 followed by a repair in place. I had to resort to MicrosoftFixit20052 to remove the prior installation. Hi, I would first see if you can get Mail configured as your default client, or check it now is. If that doesn't work or isn't working, I think you've little chance of then selecting Outlook as your default.

If you can get Mail configured, then you can try reconfiguring Office- if you check the install options it might allow you to select whether to install Outlook or not- modify. I've not used Office 2007, but if you can deselect Outlook (remove it) then select it again as an optional component, that might be more focussed. If all the above fails, an in-place upgrade repair install, which keeps all programs and most settings, refers to Win 10, not Office. Here's my text and a link to the tutorial. Precede it with this in case sthg has happened to your file system: From an admin command prompt [Windows key + X, click command prompt (admin)] chkdsk C: /F Your PC will need to restart.

Make sure the result is clear or fixed- else do not proceed. Post back the result, which you can get after a restart as follows: An In-place upgrade repair install will fix many things, but not those where the settings are not changed by the procedure. For this you need an installation medium with the same base build as you have installed, and x64 if you have a 64 bits OS, else x86 (32 bits). Recommendation: Before you perform the following major repair procedure, do create a disk image (see below). - this includes a link from which you can obtain Windows 10 iso file (' download a Windows 10 ISO'), or create a bootable medium.