Hi, I am having a problem trying to update my phone greeting on my Panasonic KX-T7633 . Can you assist?

This is an answer to the question you asked, how to update YOUR phone greeting. Either rate this as a FixYA (4 starts) or don't rate it at all if you're asking a different question.

When you dial into your voice mail from your phone, if you use 500, you're in your VM greeting and the lady says "enter password" or "you have xxx" messages. Option 31 and 1,2 or 3 for greetings. Note: If it says something about "temporary greeting" then select option 5 instead of 31 to change or delete the temp greeting. The other VM access code we use is 165 instead of 500. It's a left over number from the TD series systems.

If you have ESVM, where you can go off-hook and dial *383 to retrieve your messages, You access the recordings by dialing *382. If it starts to play back, then you need to consult your OM (Operating manual) or listen to the prompts to change your greetings for day and night.

Carl