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Microsoft 365 & OneDrive

Outlook stopped suggesting addresses when typing a name

The drop-down list of recent addresses that appears in the To field is empty or missing people you email daily, so every address has to be typed in full.

What you’re seeing

  • Typing the first few letters of a regular contact's name in the To field brings up no suggestions at all.
  • Only a few addresses appear, and people emailed every day are missing from the list.
  • Suggestions show old or wrong addresses that bounce when used.
  • It started after a new PC, a new Outlook profile, a switch to new Outlook or an email migration.

Common causes

Every environment is different, but these are the causes our engineers find most often:

  • The autocomplete list lives inside the mailbox and the profile, so a new profile or new tenant can start with an empty list.
  • A migration between email systems did not carry the old suggestion cache across.
  • The autocomplete option was switched off, sometimes by a policy or another user on a shared PC.
  • The cached suggestion list became corrupted, so Outlook ignores or discards it.
  • The new Outlook builds suggestions differently from classic Outlook and does not reuse the classic list.

Why it matters

Losing suggestions sounds minor, but it slows every email a user writes and raises the risk of sending to a mistyped or wrong address. For businesses handling client financial or medical details, a misdirected email can become a privacy incident. Staff also lose the quick reference of addresses they rely on, so they dig through old messages or phone colleagues. Across a whole team after a migration, the lost productivity adds up quickly.

How AskTechGurus fixes it

Skip the trial and error. A certified engineer works on your actual system, finds the root cause, and fixes it properly.

Tell us what’s happening

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A certified engineer diagnoses it

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Fixed and verified with you

The engineer resolves the root cause and confirms with you that it’s working. You don’t just get a workaround, and you get a plain-English summary of what was wrong.

Pay only when it’s resolved

Fixed price from $99, invoiced only after you approve the fix. If it isn’t resolved, you don’t pay.

Frequently asked questions

Is the list gone for good?

Not always. The suggestions may still exist in the mailbox or an older profile, and some can be brought back depending on how they were lost.

Is this the same as our contacts?

No. The suggestion list is a separate cache of recently used addresses, so contacts can be intact while suggestions are empty.

Can AskTechGurus help?

Yes. A certified US engineer looks at it over a remote secure session, from $99, and you pay only when it's resolved.

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