Errors loading and displaying Yandex.Mail

Sometimes Yandex.Mail buttons stop working, documents don't attach, or the browser reports an error.

Select a problem:

Why the email counter isn't working and how to fix it:

The browser doesn't display the page correctly

To reduce the amount of data you use, the browser saves the pages you visit in the cache. When you view these pages again, the browser may load them from the cache. For example, if your browser loads your inbox page from the cache, you will see an outdated counter value.

Try refreshing the page so that the browser has to load it from the internet. If the problem persists, clear the browser cache and delete all cookies.

Extensions block Yandex.Mail

Yandex.Mail may not work properly due to certain browser extensions or add-ons. You can temporarily disable them to determine if this is the case. If ad blockers or antivirus extensions are causing problems with Yandex.Mail, then you can add the Mail page to the list of exceptions for that particular extension. To learn about adding Yandex services to adblocker exceptions, see the section Configure the AdBlock Plus extension to work with Yandex.

Why page elements don't display and how to fix the problem:

The browser doesn't display the page correctly

To reduce the amount of data you use, the browser saves the pages you visit in the cache. When you view these pages again, the browser may load them from the cache. For example, if your browser loads your inbox page from the cache, you will see an outdated counter value.

Try refreshing the page so that the browser has to load it from the internet. If the problem persists, clear the browser cache and delete all cookies.

Extensions block Yandex.Mail

Yandex.Mail may not work properly due to certain browser extensions or add-ons. You can temporarily disable them to determine if this is the case. If ad blockers or antivirus extensions are causing problems with Yandex.Mail, then you can add the Mail page to the list of exceptions for that particular extension. To learn about adding Yandex services to adblocker exceptions, see the section Configure the AdBlock Plus extension to work with Yandex.

You are using an outdated browser

An outdated browser may not support the technologies used for quickly and easily loading pages. Install the latest version of your browser.

Internet connection has slowed down

Close all browser tabs other than Yandex.Mail. Turn off the apps that use the internet and reload the page.

Why the full version of Yandex.Mail is unavailable and how to fix it:
You are using an outdated browser

An outdated browser may not support the technologies used for quickly and easily loading pages. Install the latest version of your browser.

The wrong compatibility mode is selected in Internet Explorer 8 and higher.

Compatibility mode in Internet Explorer 8 and higher may cause errors.

Set the Browser mode and Document mode to match your browser version.

  1. Press the F12 button or select menu option Developer tools.
  2. Click the icon and choose your browser version.
    Note. If you use Internet Explorer 11 and higher, choose Edge.
Extensions block Yandex.Mail

Yandex.Mail may not work properly due to certain browser extensions or add-ons. You can temporarily disable them to determine if this is the case. If ad blockers or antivirus extensions are causing problems with Yandex.Mail, then you can add the Mail page to the list of exceptions for that particular extension. To learn about adding Yandex services to adblocker exceptions, see the section Configure the AdBlock Plus extension to work with Yandex.

Symbols and strange characters appear when the page is encoded incorrectly. Encoding might be changed by viruses and malware.

Check your computer for viruses with free antivirus programs: CureIt! from Dr.Web and the Virus Removal Tool from “Kaspersky Lab”.

Why an email is displayed incorrectly and how to fix it:
Extensions block Yandex.Mail

Yandex.Mail may not work properly due to certain browser extensions or add-ons. You can temporarily disable them to determine if this is the case. If ad blockers or antivirus extensions are causing problems with Yandex.Mail, then you can add the Mail page to the list of exceptions for that particular extension. To learn about adding Yandex services to adblocker exceptions, see the section Configure the AdBlock Plus extension to work with Yandex.

Internet connection has slowed down

Close all browser tabs other than Yandex.Mail. Turn off the apps that use the internet and reload the page.

There is a problem with the network connection

To check this, open Yandex.Mail using mobile internet. If no errors occur, contact your provider's support team. If you use work email, tell your system administrator about the problem.

Extensions block Yandex.Mail

Yandex.Mail may not work properly due to certain browser extensions or add-ons. You can temporarily disable them to determine if this is the case. If ad blockers or antivirus extensions are causing problems with Yandex.Mail, then you can add the Mail page to the list of exceptions for that particular extension. To learn about adding Yandex services to adblocker exceptions, see the section Configure the AdBlock Plus extension to work with Yandex.

If the page doesn't load, loads slowly, or you get the messages:
  • “An error occurred”
  • “Try refreshing the browser tab or just wait a few minutes and try again”.

  • “Please wait...”

  • “It is taking a long time to load the page”.

  • “Try refreshing the page or use the light version of Yandex.Mail”.

Why the page doesn't load and how to fix it:

Extensions block Yandex.Mail

Yandex.Mail may not work properly due to certain browser extensions or add-ons. You can temporarily disable them to determine if this is the case. If ad blockers or antivirus extensions are causing problems with Yandex.Mail, then you can add the Mail page to the list of exceptions for that particular extension. To learn about adding Yandex services to adblocker exceptions, see the section Configure the AdBlock Plus extension to work with Yandex.

You are using an outdated browser

An outdated browser may not support the technologies used for quickly and easily loading pages. Install the latest version of your browser.

If the recommendations given above don't help, the following may be causing problems:

Internet connection has slowed down

Close all browser tabs other than Yandex.Mail. Turn off the apps that use the internet and reload the page.

There is a problem with the network connection

To check this, open Yandex.Mail using mobile internet. If no errors occur, contact your provider's support team. If you use work email, tell your system administrator about the problem.

The wrong compatibility mode is selected in Internet Explorer 8 and higher.

Compatibility mode in Internet Explorer 8 and higher may cause errors.

Set the Browser mode and Document mode to match your browser version.

  1. Press the F12 button or select menu option Developer tools.
  2. Click the icon and choose your browser version.
    Note. If you use Internet Explorer 11 and higher, choose Edge.


The security certificate error message starts with the phrase:

  • “Your connection is not secure”.
  • “This site presents a security threat to your computer”.
  • “Incorrect certificate”.
  • “Error in security certificate”.
  • “This is an untrusted connection”.

Why you get security certificate errors and how to fix them:

Untrusted connection or invalid security certificate errors may occur due to a conflict between the browser and computer settings. These errors may also be caused by your antivirus software. To find out why you are receiving the certificate error, look for its code at the end of the message.

Error code Solution
  • ssl_error_bad_cert_domain
Make sure that the correct address is entered in your browser's address bar — mail.yandex.com or passport.yandex.com, and that the / symbol is after com rather than a period or some other symbol.
  • err_cert_date_invalid
  • sec_error_oscp_invalid_signing_cert
  • sec_error_expired_issuer_certificate
  • sec_error_expired_certificate
  • sec_error_ocsp_future_response
Make sure that your date and time are correctly set on your computer. If the wrong date or time is set, the system may incorrectly determine that the certificate period hasn't start yet or that it has already expired.
  • err_cert_common_name_invalid
  • err_cert_authority_invalid
  • sec_error_unknown_issuer
Make sure that your antivirus settings are not configured to check HTTPS connections. More information about how this can be done in Kaspersky Internet Security and ESET NOD32 Smart Security can be found under the table.

If you don't have an antivirus program on your computer, hackers may replace your security certificate using malware or an MITM attack. Check your computer for viruses using free antivirus programs, like CureIt! from Dr.Web and Virus Removal Tool from “Kaspersky Lab”.

Disabling HTTPS connection checks in Kaspersky Internet Security
  1. Open the antivirus window and click the button in the bottom left-hand corner.
  2. Go to the Advanced settings tab and choose Network.

  3. In the Check secure connections block, choose Do not check secure connections and confirm the action.
Disabling verifications of HTTPS connections in ESET NOD32 Smart Security
  1. Open the antivirus window, go to the Settings tab and click the Additional link.
  2. In the Web and Email → SSL/TLS block, disable the Enable SSL/TLS protocol filtering option.
  3. In the Web and Email → Web access protection → Web protocols → Configure the HTTPS scanning module block, select Enable HTTPS scanning.
  4. Click OK to save changes.