It is not an issue to panic as long as we are here to help you with simple solutions. Just follow these lucid steps to get rid of this issue-

  1. Check your internet settings to verify that it is working properly
  2. Verify that your E-mail settings of your server are in accordance with yahoo mail
  3. Examine whether your password is correct or not. If it is not, try turning off your Caps Lock key & the Num Lock key as the password key is case sensitive.
  4. Examine if the problem is caused by your firewall or antivirus settings as sometimes they block some scripts. If it is so, disable them as per the procedure described below-

Step 1- Go to the Help page of your antivirus or anti-spyware software program

Step 2- Disable your “Windows Defender” for some time

Step 3- Go to “Settings”

Step 4- Go to “Start Menu”

Step 5- Click on “Updates & Security”

Step 6- Click on “Windows Security” option

Step 7- Select “Open Windows Defender Security System”

Step 8- Now, you must open the “Windows Defender’s Settings”

Step 9- Then, go to “Virus & Threat Security” settings

Step 10- Pick the “Real Time Protection Settings”, then go to “Cloud Delivered Protection Settings”

Step 11- Then, go to “Automatic Sample Submission Settings”

Step 12- Now, temporarily Turn Off your Windows Defender

Step 13- Go to the Administrative panel of your computer

Step 14- Select your Administrative Template from the given options

Step 15- Go to “Windows Components”

Step 16- Open “Windows Defender Antivirus Software”

Step 17- Now, turn off your windows defender by double clicking on it