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Hello Tim Koabel
Thank you for reaching out to Microsoft Q&A Forum. I understand you’re trying to add your Cogeco email account to the New Outlook for Windows and Outlook is returning that error message. This usually happens when Outlook cannot successfully authenticate with the email provider’s servers.
Could you confirm whether you’ve tried the steps mentioned in the Q&A Assist reply under your post? If yes, did you face any difficulties with those steps?
Please try these steps:
1. Make sure your Cogeco account supports secure app sign‑in
Many third‑party email providers require: an app password or specific incoming/outgoing server settings (IMAP/SMTP) for Outlook to connect.
2. Add the account manually using IMAP/SMTP
In New Outlook for Windows:
- Go to Settings > Accounts > Add account
- Enter your email, then select Advanced setup
- Choose IMAP
- Enter Cogeco’s server settings exactly as provided by them
If any field is incorrect (port, SSL, authentication method), Outlook may return the error you’re seeing. You can see this official guide: Add an email account to Outlook for Windows - Microsoft Support
3. Check if the provider is temporarily rejecting connections
That error message can appear if:
- the provider is limiting sign‑ins,
- there's a temporary service issue on their mail servers,
- too many failed attempts recently triggered a security block.
Try signing in to your Cogeco email on their webmail site (if possible) to confirm that it works normally. If webmail also shows issues, the provider may need to fix on their side.
4. Confirm no security block on the Cogeco side
Some providers block connections when:
- IMAP is disabled,
- access from new apps/devices requires confirmation,
- a CAPTCHA or security unlock is pending.
Check your Cogeco webmail settings to make sure IMAP is enabled and no security alert is waiting.
Please feel free to let me know how it goes, I’ll be happy to guide you further. Thanks a lot for your understanding!
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