Outlook 2010 has stopped remembering and autocompleting email addresses

Hi I am using outlook 2010 and it has suddenly stopped remembering email addresses, after I restart the pc it loses all email addresses that i used for the day. Can someone please help.  
Who is Participating?
iamshergillConnect With a Mentor Commented:
In Outlook 2010, name caching stores in hidden folder in user's mailbox or .pst file depends on settings.

If your are not able to see name caching, chances whether it has been disabled or cache is currupted which is always pron for curruption.

Please follow the below steps:

- Open Outlook > File > Option > Mail > Send Message > Disable: Auto complete option and click "Empty Auto-complete List".
- Restart Outlook
- Perform the same steps and Enable:Auto Complete Option.

This is will create a new cache. If still not work, create new Outlook profile for your mailbox.
Please let me know how it goes.

This information stores in .nk2 file.

THere are 3 chances:

Chance 1: Accidently .nk2 file got deleted. If yes, it may available in Recycle Bin and you can restore it. If that is not available there, no fix then. Location of .NK2 file is "C:\Documents and Settings\User_Profile\Application Data\Microsoft\Outlook"

Chance 2: It has been disabled from Outlook by mistake. You can enable it. Follow steps mentioned in below link:

Chance 3: It has been disabled by your Administrator by Group Policy. If this is the case, no fix for this.
Trevor_CAuthor Commented:
Outlook 2010 does not use a .nk2 file, in outlook 2010 the addresses are stored in some hidden autocomplete file.
Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Oho I am sorry, i missed to read that it is outlook 2010. Give me some time to provide you solution.
Trevor_CAuthor Commented:
Thank you for your assistance.
Trevor_CAuthor Commented:
Thanks for your assistance, I have applied the solution and will only know by tomorrow morning if it.  
Trevor_CAuthor Commented:
Great stuff thank you auto complete list now works perfectly.
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.