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

Forgot to mention. At the time of online repair I left the "Experiences that download online content" and "All connected experiences" turned ON. Not sure if the repair would have had the same effect if I had them turned off.

I wasn't 100% sure I had tried an online repair with those services turned on. I did so without any luck; still get the 30088-27 error.

Thanks for reporting, though.

I have been having the same issue here as others. I just now updated to latest version with the command line option. I then followed IanSav42 instructions re: Office settings but with a slight change. I tried to use Help but was told that "My admin had turned them off" or words to that effect. I am my admin and I had not turned that setting off. I enabled "All connected experiences" option and then enabled "Experiences that download online content" option in the Settings. I conformed my choices and the restarted Outlook. I did not reboot, just restarted Outlook. I then renabled updates in Outlook and tried to update. The program ran the update screen and reported I was up to date!! I have since tried to update from Outlook again and it does state I am up to date and does not throw the error which it did before. I will continue to test this throughout the day and report back with any failures.

I can confirm that, on two different computers (Dell XPS laptop, plus custom-built desktop), this did NOT work.

As for everyone's complaints against Microsoft, I can say you are 100% correct. An ex-g/f of mine (from many years ago) was the Project Manager for MS Office 2000...and, two of the reasons she chose to leave the company were due to lack of support, and lack of communication. She told me that there was extreme difficulties in fixing problems because they received very little, if any, information provided by those having problems. Put another way, we can report all the problems we want, and even provide proof of said problems...but, very little of that information ever reaches the programmers. It's not-so-much that they (meaning, the programmers) "don't care" about fixing the problems. It's more that the 'chain', from the lowest-level customer support personnel, up to the actual programmers responsible for correcting the code, has MULTIPLE "broken links", all of which were 'created' by Microsoft management (or, should I say, mismanagement). She got fed up with the problems that management was the core cause of, left the company, and returned to the SF Bay Area.

The moral of this (as I'm sure 99.999% of you will understand) is, when it comes to Microsoft, we can, literally, "expect" products to be 'broken' (probably several times) throughout the life of said product. And, don't hold your breath expecting MS to 'fix' whatever they 'break'. In the end, their ultimate "solution" will be to release a new version, and figure out a way to 'force' as many users to 'upgrade' to the new version. Ever since Bill Gates stepped down as CEO, this appears to be the 'philosophy' that the company operates under.

This is a user-to-user forum as stated in the FAQ. Microsoft decision makers never contribute here.

You can confirm my status as a Microsoft MVP through the mvp.microsoft.com site.

No wonder Microsoft keeps making blunders like the issue behind this thread. If Microsoft decision makers insist of keeping their heads in the sand we users will never get products in which we can trust.

In the past I have documented bugs and failures within Outlook up to and including Outlook 2021. My case was escalated to senior Level 3 engineers who confirmed and verified the bugs I reported. When I asked when the problems would be fixed I was told that the support team are not allowed to contact the development engineers. They were expected to find and fix the issues themselves. When dealing with a proven bug in the software all they could do, and did in my case, is close the case as unfixed (unfixable). There is no point of escalation, there is no decision maker intervention or review. The case was just closed as if the bugs don't exist!

In spite of the information provided here, I tried to follow the Microsoft instructions for resolving this issue. All I got was a corrupted Office 2016 installation (after running the online repair) with my registration/activation codes being deleted. (There was no warning that this was possible.) I contacted Microsoft Support to get my system restored and I was told I should have known that a repair can deregister a product! Unfortunately, I was not prepared for this possibility and did not have my activation codes handy. This risk was most certainly not mentioned in any of the Microsoft documents relating to this error. Neither the support consultant nor her manager were concerned about the licence revocation problem. They offered no assistance to retrieve my license or provide a solution. After a very mad scramble for many hours I finally found my activation codes and have since restored my access to my software.

Returning to this issue, The Microsoft agent's response to my problems was to uninstall Office and start again. I needed to show them this thread before they would even accept that this was not an isolated issue on my machine. When I pointed out that my perpetual licence had been deleted and a fresh installation would require a new license they told me to buy a new copy of the product! Their care factor was less than zero, or zero at best. This was the end of the Microsoft support offering.

To add insult to the whole situation, I bet most of you know what is coming..., after all the repairs and re-registration of Office 2016 the original update error remained.

It is just incredible that MS can't understand plain English.

Probably because MSFT support personnel are located in third world countries. All they are qualified to do is copy and paste answers, even if those answers are erroneous or irrelevant.