If SeoTools isn’t working:

  • Makes sure you have the latest Microsoft .Net Framework installed on your computer. You need the "full" version.
  • Are you using the correct version? Check out if your copy of Excel is 32bit or 64bit.
  • Did you really unzip SeoTools.<version>.zip?
  • SeoTools.config.xml must be in the same directory as the XLL file. Also make sure it’s writable.
  • Restart you computer?

"The Ribbon/COM Add-in helper required by add-in SeoTools could not be registered"

This sometimes happens when SeoTools is put in some kind of Error state by Excel.

Under Add-Ins and "Manage: Disabled Items", see if SeoTools is listed here and if so "Enable".

If this doesn't work try this trick to reset Excel:

(only do this yourself if you know what you're doing)

Open the registry and delete these folders:


Where you replace 14.0 with your Excel version.

Then restart your computer and try to install SeoTools again.

Ribbon (menu) not showing?

Go to Add-Ins under Options and select Manage COM Add-ins. Remove any SeoTools references and try installing SeoTools again.

Using 32 bit version on Windows 8

If you’re having problems using the 32 bit version Windows 8. Try to install .Net 3.5 SP1.

"407 Proxy Authentication Required"

Create a config file named EXCEL.EXE.config in your Office installation folder (for Windows 7 and Office 2010: C:\Program Files (x86)\Microsoft Office\Office14\) with the following contents:

<?xml version="1.0" encoding="utf-8" ?>
    <defaultProxy enabled="true" useDefaultCredentials="true">       
      <proxy usesystemdefault="true" bypassonlocal="true"/>

Then restart Excel!


"The server committed a protocol violation"

When i try to grab any data or header information from any page on i get this error. "The server committed a protocol violation. Section=ResponseHeader Detail=CR must be followed by LF"

Try the same solution as with 407 Proxy Authentication Required errors.


"Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute'"

Install the latest version of .Net.


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