Synchronized account failed

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Synchronized account failed

Louis Betts 40

I am try to add in Outlook a Gmail account, my 5 domain email accounts and an onmicrosoft.com email account it fails after the synchronized account.

By the way, I am so confused with the tag system right now on Q&A, I just cannot find the Outlook tag, has it changed ?

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Kudos-Ng 15,050 Microsoft External Staff Moderator

Hi Louis Betts,

Thank you for posting your question in the Microsoft Q&A forum.

To better understand the issue and provide the most accurate support, I’d like to ask a few clarifying questions.

First, may I ask which version of Outlook you are currently using? Are you using the classic Outlook, the new Outlook, or Outlook on the Web?

If you are using Outlook on the Web, could you let me know the URL you are accessing it from? If it is https://outlook.live.com/, please note that this version only supports adding and using personal accounts. It does not support adding business accounts.

Also, if possible, could you share screenshots of the error messages that appear when the sync fails? Please remember to blur out any email addresses or personal information before sharing.

Regarding your confusion with the tag system on Q&A, I understand it can be a bit tricky. The tag system has undergone some recent changes, but based on my exploration and what I have seen in recent threads, the Outlook tag still exists. You might want to recheck it, possibly by searching with related keywords or browsing through the categories.

Looking forward to your reply so we can assist you further.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Louis Betts 40 Reputation points

2025-07-18T12:03:19.5466667+00:00

Hi Kudos-Ng

Im using classic Outlook

Let me clarify the context: Im adding 5 domain account and 1 work account to overview it i ONE profile Outlook, I mean I want to check delivered email from 6 different emails on my initial outlook account, I dont want to switch manually

You can see the attached picture
Kudos-Ng 15,050 Reputation points Microsoft External Staff Moderator

2025-07-18T13:08:22.6933333+00:00
Hi Louis Betts,

Thank you for providing more context and the screenshot. That really helps.

Regarding your setup, if your five domain accounts are not from outlook.com, hotmail.com, or live.com, then they are considered business accounts. It seems you are trying to add these accounts into one profile in classic Outlook to manage all incoming emails in one place.

From your description, it looks like you may have followed this guide to add the accounts: Add an email account to Outlook for Windows - Microsoft Support However, the sync failure could be caused by several factors. One common reason is missing licenses for using the desktop Outlook app. I recommend checking with the IT admin of each business account to confirm whether the accounts have valid licenses for desktop Outlook.

If all accounts do have valid licenses, could you please share any specific error messages that appear when the sync fails? That would help us narrow down the issue.

In the meantime, here are a couple of troubleshooting steps you can try with classic Outlook:

1. Create a new Outlook profile This can help isolate any profile-specific issues: Create an Outlook profile - Microsoft Support

2. Clear Outlook cache If Outlook is open, please close it first. Then follow these steps:

Press Windows + R to open the Run box

Type: %localappdata%\Microsoft\Outlook and press Enter

Open the folder named RoamCache

Select all files (Ctrl + A), right-click, and choose Delete

Optionally, clear your Recycle Bin to remove the files completely

Let me know how it goes or if you need help with any of the steps above. I'm here to assist further.
Louis Betts 40 Reputation points

2025-07-18T13:54:50.9433333+00:00

Hi Kudos-Ng

You mean all my 5 emails must have licenses ? because I have 5 personal email and 1 work email
Kudos-Ng 15,050 Reputation points Microsoft External Staff Moderator

2025-07-18T14:16:05.38+00:00

Hi Louis Betts,

Thank you for your response.

As I mentioned earlier, if the account is a business account, then yes, it’s important to check whether it has the appropriate license for use with the desktop Outlook app. In your case, since only one of your accounts is a work account, you would only need to contact your IT admin to verify the license for that specific account. The other five personal Gmail accounts do not require such licenses.

However, if you're experiencing errors when adding these personal accounts, the issue might be related to your Outlook client itself. I recommend starting with the first troubleshooting step I shared earlier: creating a new Outlook profile. This can help resolve profile-specific issues.

Additionally, please make sure your Outlook app is updated to the latest version, as outdated versions can sometimes cause unexpected behavior with account synchronization.

Let me know how it goes or if you need help with any of the steps. I’m here to assist further!
Louis Betts 40 Reputation points

2025-07-18T14:20:40.07+00:00

Hi Kudos-Ng

Thanks, may I know which licenses need to be assigned ?
Kudos-Ng 15,050 Reputation points Microsoft External Staff Moderator

2025-07-18T14:35:01.4133333+00:00
Hi Louis Betts,

Thanks for your follow-up question.

To use the Outlook desktop application with a work or business account, the account must be assigned a Microsoft 365 license that includes access to the Outlook desktop client. Here are some common license options:

Licenses that do include Outlook desktop:

Microsoft 365 Business Standard

Microsoft 365 Business Premium

Microsoft 365 E3 / E5

Office 365 E3 / E5

License that does not include Outlook desktop:

Microsoft 365 Business Basic

This plan only provides access to Outlook on the web and does not support the desktop version of Outlook.

For more Microsoft 365 licenses and their Outlook support, you can refer to the official documentation here: Licensing in new Outlook for Windows | Microsoft Learn

I hope this information is helpful to you. If you find it useful, please consider marking the initial answer so that others in the community with similar questions can easily find it as well.

Let me know if you have any further questions.
Louis Betts 40 Reputation points

2025-07-21T03:15:40.16+00:00

Hi Kudos-Ng

Thanks, appreciated

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