Outlook 2003 / 2007 Won’t Save Login Password

Outlook has a problem with logging in to a domain that is different to your local domain. So, this happens if your server is hosted outside of your local network.

To fix this problem open up your registry. (Start>Run or Search for Regedit)

The navigate to


Then modify the value of:

lmcompatibilitylevel to 2

If it doesn’t exist add a new “String Value“, call it “lmcompatibilitylevel” and modify the value to 2

This should allow outlook to open without prompting to login.

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