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📧 Outlook Autofill Recovery

Outlook AutoComplete List Disappeared How It Gets Lost and What Comes Back

Yesterday Outlook knew everyone. Today it knows nobody. A whole list disappearing feels like data loss - sometimes it is recoverable, sometimes it honestly is not, and the difference depends on your account type and one small file. This page walks the realistic recovery paths in order.

✍️ Technical Anshu📧 Microsoft Outlook⏱️ Recovery guide
🎥 Watch the fix in the video - the easy solution for Outlook autofill, step by step

Individual suggestions drop off the list all the time - that is normal housekeeping. The entire AutoComplete list vanishing at once is different, and it has a short list of real causes: a new profile or PC, a damaged cache file, the Empty List button, or an account change. Match your situation to the cause first; recovery only makes sense after that.

What Happened to the List - the Usual Causes_ □ X
New profile or new PCList stayed behind on the old one
Cache file damaged by a crashList unreadable - Outlook starts empty
Empty List button was pressedDeleted on purpose by the button - no undo
Exchange mailbox holds the listList usually returns by itself after sync
A vanished list always has a cause. Matching the cause to your situation tells you whether anything can come back
1

First, Work Out Which Way Your List Is Stored

The honest answer to "can I get it back" depends on your account type:

  1. Microsoft 365 / Exchange accounts: the AutoComplete list is kept in a hidden message inside the mailbox itself. It roams with the account, and a healthy Exchange profile usually re-downloads it. If it vanished here, give a new profile time to sync fully before panicking.
  2. IMAP and POP accounts: the list lives only in the local Stream_Autocomplete cache file on that one PC. Nothing on the server has a copy. Local damage means local loss, unless the old file still exists.
2

Hunt for the Old File Before Accepting the Loss

Crashes and repairs often rename or orphan the cache rather than deleting it:

  1. Close Outlook. Press Windows + R and open %LOCALAPPDATA%\Microsoft\Outlook\RoamCache
  2. Look for every file starting with Stream_Autocomplete_ - sort by date. An older, larger file is very likely your lost list
  3. Check the Recycle Bin as well, and the same folder under any other Windows user profile you may have used
  4. If you find a candidate, keep it safe - do not open Outlook again until you have copied it somewhere else
3

Restore a Found File the Documented Way

Outlook only reads the cache file whose name matches the current profile. The documented recovery is a careful rename, done with Outlook fully closed:

  1. Open Outlook once, send one email, close it - this creates a fresh small Stream_Autocomplete file with the correct name for this profile
  2. Copy that exact file name down, then delete the fresh file
  3. Rename your recovered old file to that exact copied name
  4. Open Outlook and test the To field - the old suggestions should be back

Third-party NK2/cache editor tools can also inspect these files and old .nk2 files from Outlook 2007 and earlier, but for a simple rename recovery they are not needed.

4

When It Is Really Gone - Rebuild Without the Pain

If the list was emptied with the Empty List button, or the file is nowhere on disk, there is no recycle bin for it - be suspicious of any tool promising otherwise. The rebuild is kinder than it sounds: the list re-learns every address you send to, so your daily regulars return within days. Speed it up honestly: send one short "new address book test" mail does not help - only real sending teaches it. What does help is importing nothing and simply working; within a week most users stop noticing. And take the lesson forward: the moving guide below shows the two-minute backup that prevents a repeat.

🎥 Watch the Complete Fix in the Video

The video walks through the RoamCache folder live - spotting the orphaned cache file and doing the rename recovery without risking the current list.

▶️ Watch Full Video
❓ Frequently Asked Questions

My whole suggestion list vanished after Outlook updated - is it deleted

Usually not deleted. Updates and repairs sometimes create a fresh profile or a fresh cache file, leaving the old Stream_Autocomplete file orphaned in the RoamCache folder. Sort that folder by date and look for an older, larger file with the same name prefix - that is very likely your list, and the rename method in this guide restores it.

Does an Exchange or Microsoft 365 account keep a server copy of the list

Yes. For Exchange-based accounts the AutoComplete list is stored in a hidden message inside the mailbox, so it roams between PCs and usually returns after a new profile finishes syncing. The local-file loss story mainly applies to IMAP and POP accounts, where the list exists only on the one computer.

Can a recovery tool bring back an emptied AutoComplete list

If the Empty Auto-Complete List button was pressed and no old cache file exists anywhere on disk, the data is genuinely gone and no honest tool can recreate it. Tools can read, merge and convert existing cache and NK2 files - that is all. Anyone promising to recover a list from nothing is selling hope, not software.

This guide is based on the Outlook Autofill fix video by Technical Anshu • Stuck on any step, ask in the video comments and the community will help you 🙏