[Solved] Gmail server error occurred and your email was not sent #76997

Problem: When you trying to send an email using Gmail account, an error prompt “Oops… a server error occurred and your email was not sent. (#76997)”.

Gmail error 76997

Solution 1: Clear Browsing Data on Browser

For Mozilla Firefox

Step 1: Open Mozilla Firefox.

Step 2: Click on library-like button located at the top right part of the browser’s window.

Step 3: Navigate to History > Clear Recent History…

Step 4: Under the Time range to clear setting, choose Everything by clicking the arrow which will open the dropdown menu.

Step 5: Check at least Cookies and Cache, click on Clear Now.

Step 6: Restart browser.

For Google Chrome

Step 1: Open Google Chrome.

Step 2: Click on the three vertical dots in the top right corner of its window.

Step 3: Navigate to More tools > Clear browsing data.

Step 4: Choose the beginning of time setting as the time period and select at least cache and cookies to delete.

Step 5: Click on Clear data button.

Step 6: Restart computer and disconnect network from computer.

Step 7: Open Google Chrome, again click on the three dots and select Settings > Advanced settings.

Step 8: Open Content > See all cookies and site button.

Step 9: Click on Remove all button.

Step 10: Restart computer.

Solution 2: Log out Gmail Account then Login Again

Solution 3: Uninstall Google Earth

Step 1: Login Windows as Administrator.

Step 2: Go to Start > Control Panel > Settings app > click on Uninstall a Program under the Programs section.

Step 3: Click on Apps to open a list of all installed programs.

Step 4: Locate Google Earth entry and click on it once.

Step 5: Click on Uninstall button.

Step 6: Restart computer.

Solution 4: Add Exception for Google Servers for AVG

Step 1: Open AVG user interface.

Step 2: Right-click on the icon in the system tray and choose Open

Step 3: Navigate to Menu > Settings > Components tab.

Step 4: Click on Customize button next to the Web Shield entry and navigate to Exceptions tab.

Step 5: Under the URLs to exclude part type in the following entries:
google.com/*
*.google.com

Reference

Gmail Help Forum: Oops… a server error occurred and your email was not sent. (#76997)
Cipher 101: Oops… a server error occurred and your email was not sent. (#76997)