Office documents open slowly in SharePoint

I'm on Windows 7 with IE 9. I believe this works with other versions of IE also. When clicking on a document in SharePoint it opens very slowly. It appears there is a fix for this. Go to Control Panel>Internet Options>Connections>LAN Settings and uncheck 'Automatically detect settings'. Now try opening a document from the Sharepoint site. It should pop right up.

Sharepoint site prompts for authentication when opening Office documents

If your sharepoint site is in your trusted sites and is set to use existing user and password for authentication, but it still prompts for authentication, there is a fix. You may find when prompted for authentication that you can click cancel on the prompt and the Office document will open. If you want to do away with the prompt for authentication try this regedit.

1) Run regedit
2) Browse to: HKLM\System\CurrentControlSet\services\WebClient\Parameters
3) Create a new Multi-String Value called ‘AuthForwardServerList’
4) Enter each web address as a value of the 'AuthForwardServerList'
a. Do not include port numbers
5) Reboot the computer
6) The documents should now open without being prompted for authentication.

How to open documents from Sharepoint in edit mode

At my work we have a SharePoint server. Whenever I would open a document (.docx, .xlsx) it would always open in Read Only mode. I found a fix for this that worked for me (Windows 7 x64 and Office 2007).

First we need to open the registry editor. Go to Start>Run and type in: regedit and click OK. If you are on Windows 7 and do not have a Run box do this:
Start>All Programs>Accessories>right click on Command Prompt and choose 'Run as Administrator'. This will bring up a command prompt window. At the prompt type: regedit and hit the Enter key. This should open the registry editor.

Now expand to the following registry key: HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Common\Internet
With Internet highlighted right click in the white space of the right side window pane and choose 'New>Dword value'. Name the new value OpenDocumentsReadWriteWhileBrowsing
Now right click on the new name and choose Modify. Put 1 in the Value data box. Click Ok.

You should now have something that looks like this:


Once this setting is complete retry opening a document or spreadsheet from the SharePoint server and see if now it opens in an non-read only mode. This worked for me, I hope it works for you.