Update error code 30088-27 Office 2021 what to do to get corrected????

I have to confess that I am a bit lost in the thread.

Besides my act of God, has anyone find anything that works that does not require go to a previous version and stop updates?

Before my last Online Repair (did two of them for this update), I disabled the Privacy Settings, rebooted and then re-enabled all of them except the Send Me Ads one, rebooted again and then did another Online Repair. After that, everything seems to now be working correctly.

OK. I need to get this straight.

1. You disabled the Privacy Settings FIRST, rebooted and then did an Online Repair.
2. Immediately after the first repair, you re-enabled all (except Ads), rebooted again, and did another Online Repair.

Is that the correct sequence?

Yes. Since my Help wasn't working, I decided to disable the Privacy as I thought something might be corrupted in the settings. After a reboot, I re-enabled them and then rebooted again. I have found just restarting Outlook doesn't always work in getting settings changed. Since Help still didn't work, I decided to try another Online Repair to try to fix that. After that next Online Repair, I reactivated Office and everything, Help and Update, seem to be working fine.

So, maybe the problem is a corruption of the Privacy settings. Or maybe it's the phase of the moon.

So, maybe the problem is a corruption of the Privacy settings. Or maybe it's the phase of the moon.

Phase of the moon from where I'm sitting.

I repeated all of your steps and wound up in the same place; 30088-27 error.

Again, I changed no settings on my machines and did nothing other than update to the build just prior to my current build (for which I had to use the elevated command prompt).

So, MSFT issue, as far as I'm concerned.

Where, exactly, can you buy a perpetual version of Office for less than $100? Note that I use Outlook, Word, Excel, and Publisher (PP on occasion) so Home & Business won't work for me (or a couple other members of my family); I would need the Pro version.

Search, and you will find. I know that sounds like a 'joke'...but, honestly, if you search online, you can find that there are several MS authorized discounters that are legally/legitimately selling keys for the 'standard', 'teacher & student edition', and 'professional' versions.

I won't state from whom I purchased my most recent purchase, but I will say that I purchased Office Professional Plus 2021 for $79...and, yes, it DOES appear within my Microsoft account, thus you know the key was a legal/legitimate key. In said purchase, I received two emails. The first, from the business I purchased from, contained the key. The second came from Microsoft (further proof of it's legitimacy), providing instructions on how to add the key to my Microsoft account.

Search, and you will find. I know that sounds like a 'joke'...but, honestly, if you search online, you can find that there are several MS authorized discounters that are legally/legitimately selling keys for the 'standard', 'teacher & student edition', and 'professional' versions.

I get it but don't have any idea who to trust as I've seen sites selling "keys" for $17, $29, et al.

Further, five keys, even at your price, is still going to cost me $400 making my breakeven point around 4 years. So, why bother? It's not as if I'm going to save a ton of dough or anything. Of course, anyone who only needs one or two licenses would do better but that's not me.

"C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe" /update user updatetoversion=16.0.17830.20138

Updated (elevated command prompt, of course) to 20138 but continue to get the 30088-27 error.