Question: I am using the below code to open a pdf file but its not working-

```
<iframe src="file:///C:\Users\Downloads\0895custbill08132015.pdf" style="height: 638px;" frameborder="0"></iframe>

```

For a google doc the below code is working fine, I am not sure what is required to open a locally saved doc.

```
<iframe src="http://docs.google.com/gview?url=http://webshire-aioopsss.com/pdfs/sample_contract.pdf&embedded=true" style="height:638px;" frameborder="0"></iframe>

```

Answer: 
Most browsers won't let you open a locally stored file from a website for security reasons. Typically I will host the file on an IIS server and then retrieve it from there (which is what you're doing when you're retrieving it from googledoc).
You are using backslashes in your `src`. Please change them to slashes

```
<iframe src="file:///C:/Users/Downloads/0895custbill08132015.pdf" style="height: 638px;" frameborder="0"></iframe>

```