PATH variable showing different values (command prompt vs environment variables dialog box)

My Windows 7 PATH variable shows different content weather I enter the `PATH` command in the command prompt or weather I go through the environment variables dialog box. More over, the `PATH` variable seems to be duplicated at some time.

PATH variable @ the command prompt:

`````` 1 C:\soft\Python27\;
2 C:\soft\Python27\Scripts;
3 C:\ProgramData\Oracle\Java\javapath;
4 C:\Windows\system32;
5 C:\Windows;
6 C:\Windows\System32\Wbem;
7 C:\Windows\System32\WindowsPowerShell\v1.0\;
8 C:\Anaconda;
9 C:\Anaconda\Scripts;
10 C:\Program Files\Java\jdk1.8.0_65\bin;
11 C:\Program Files (x86)\Skype\Phone\;
12 C:\Program Files\MATLAB\R2014a\runtime\win64;
13 C:\Program Files\MATLAB\R2014a\bin;
14 C:\Program Files\MATLAB\R2014a\polyspace\bin;
15 C:\soft\Python27\;
16 C:\soft\Python27\Scripts;
17 C:\ProgramData\Oracle\Java\javapath;
18 C:\Windows\system32;
19 C:\Windows;
20 C:\Windows\System32\Wbem;
21 C:\Windows\System32\WindowsPowerShell\v1.0\;
22 C:\Anaconda;
23 C:\Anaconda\Scripts;
24 C:\Program Files\Java\jdk1.8.0_65\bin;
25 C:\Program Files (x86)\Skype\Phone\;
26 C:\Program Files\MATLAB\R2014a\runtime\win64;
27 C:\Program Files\MATLAB\R2014a\bin;
28 C:\Program Files\MATLAB\R2014a\polyspace\bin;
29 K:\sw\Git\cmd;
``````

PATH variable @ through the environment variables dialog box

`````` 1 C:\soft\Python27\;
2 C:\soft\Python27\Scripts;
3 C:\ProgramData\Oracle\Java\javapath;
4 C:\Windows\system32;
5 C:\Windows;
6 C:\Windows\System32\Wbem;
7 C:\Windows\System32\WindowsPowerShell\v1.0\;
8 C:\Anaconda;
9 C:\Anaconda\Scripts;
10 C:\Program Files\Java\jdk1.8.0_65\bin;
11 C:\Program Files (x86)\Skype\Phone\;
12 C:\Program Files\MATLAB\R2014a\runtime\win64;
13 C:\Program Files\MATLAB\R2014a\bin;
14 C:\Program Files\MATLAB\R2014a\polyspace\bin;
15 K:\sw\Git\cmd;
``````

At the command prompt, the first 14 entries are duplicated.

Question: how can I fix this?

For most variables, if there are a system variable and a user variable with the same name, the user variable simply overrides the system one.  But `PATH` is a special case — the value of the variable that is set in CMD is the user variable appended to (the end of) the system variable (with a semicolon (`;`) interjected, if necessary).
It looks like you made a common error — you copied your complete `PATH` value into the space for your individual `PATH` variable in the environment variables dialog box.  (Or perhaps some buggy program did this for you.)  This resulted in the system `PATH` value being duplicated in your individual `PATH` variable, so now you get the combined / duplicated value whenever you start a Command Prompt process.  The solution is simply to edit your individual `PATH` variable to remove the first 14 entries (i.e., everything but `K:\sw\Git\cmd`).  Those 14 directory names are in the system `PATH` value, so you will still get them in your `PATH` value (but only once).