Hyperlink to windows search using search-ms

I am tring to make a hyperlink to a windows search.
E8 is cell with my search term (example: mysearch)
E9 is cell with path (example: \\FileServer\documents\)


So first I am just tring to make the string work before I implement in hyperlink function.
I need path to be variable as I will send to other users and I want them to put thier path into E9

Here is what I have so far but I can not get it to work - any help would be aprecaited.
="search-ms:crumb=System.Generic.String:"&E8&CHAR(38)&"crumb=location:"&E9

Solved
I had to replace the "\" in the path with %5c

="search-ms:crumb=System.Generic.String:"&e8&CHAR(38)&"crumb=location:"&SUBSTITUTE(E9,"\","%5c")