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Outlook Error 0x800ccc18 - Disabling Secure Password Authentication (SPA)
Last updated 2025-06-07
Disabling Secure Password Authentication (SPA)
What is this?
A recent software update pushed out by Microsoft has caused Secure Password Authentication (SPA) to be enabled by default on many customers' email clients.
Unfortunately, being a corporate-specific feature, this has caused issues in certain installations of Microsoft Outlook — especially where licensing or feature compatibility issues may be present. To resolve email connectivity problems, SPA must be manually disabled.
Below is a brief guide to turning it off for different email clients affected by the update:
Outlook Express
- Select the Tools menu at the top of the screen and click Accounts.
- Choose your email account and click Properties.
- Navigate to the Servers tab.
- Uncheck Secure Password Authentication (SPA).
Outlook 2002
- Open the Tools menu and choose Email Accounts.
- Select View or change existing e-mail accounts.
- Click your Indichosts.net POP3 email account.
- Remove the checkmark next to Secure Password Authentication.
Outlook 2007
- Go to Tools → Account Settings.
- Select your email account and click Change.
- Uncheck Require login using Secure Password Authentication (SPA).
- Click More Settings, then go to the Advanced tab.
- Set Incoming Mail Port to
110and Outgoing Mail Port to25. - Ensure that SSL and Encryption options are turned off.
Windows Live Mail
- Select the Tools menu and click Accounts.
- Choose your account and click Properties.
- Go to the Servers tab.
- Uncheck the option for Secure Password Authentication (SPA).
If you're still having trouble after making these changes, please contact our support team for assistance.
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