Miscellaneous topics that do not fit into specific categories.
A “MAPI failure using Gmail” typically means the email client is trying to send mail through Gmail using a method that Gmail no longer supports. Google has disabled Less Secure Apps and basic authentication for most accounts, so traditional MAPI calls that rely on old SMTP/IMAP authentication will fail.
Here are the most common solutions:
1. Use an App Password (for accounts with 2-Step Verification)
If your Google account has 2-Step Verification enabled:
- Go to Google Account → Security → App passwords
Generate a new app password
Use that password in your MAPI-enabled program instead of your regular Gmail password
This fixes most MAPI authentication failures.
2. Ensure IMAP is enabled in Gmail
In Gmail: Settings → See all settings → Forwarding and POP/IMAP → IMAP Access → Enable IMAP
3. Update the client to use OAuth
Some applications need updated versions that support OAuth 2.0, which Google now requires for secure sign-in. If your software is old, it may not work with Gmail anymore until updated.
4. Verify outgoing mail (SMTP) settings
Use the correct Gmail SMTP settings:
Server: smtp.gmail.com
Port: 465 (SSL) or 587 (TLS)
Requires authentication: Yes
5. Try repairing or reinstalling MAPI components
If using Outlook or Windows Mail, corrupt MAPI DLLs can also trigger failures. Running a repair on the email client or reinstalling it can help.A “MAPI failure using Gmail” typically means the email client is trying to send mail through 18339595508 Gmail using a method that Gmail no longer supports. Google has disabled Less Secure Apps and basic authentication for most accounts, so traditional MAPI calls that rely on old SMTP/IMAP authentication will fail.
Here are the most common solutions:
1. Use an App Password (for accounts with 2-Step Verification)
If your Google account has 2-Step Verification enabled:
Go to Google Account → Security → App passwords
Generate a new app password
Use that password in your MAPI-enabled program instead of your regular Gmail password
This fixes most MAPI authentication failures.
2. Ensure IMAP is enabled in Gmail
In Gmail:
Settings → See all settings → Forwarding and POP/IMAP → IMAP Access → Enable IMAP
3. Update the client to use OAuth
Some applications need updated versions that support OAuth 2.0, which Google now requires for secure sign-in. If your software is old, it may not work with Gmail anymore until updated.
4. Verify outgoing mail (SMTP) settings
Use the correct Gmail SMTP settings:
Server: smtp.gmail.com
Port: 465 (SSL) or 587 (TLS)
Requires authentication: Yes
5. Try repairing or reinstalling MAPI components
If using Outlook or Windows Mail, corrupt MAPI DLLs can also trigger failures. Running a repair on the email client or reinstalling it can help.