Errors uploading 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 the browser loads the incoming mail page from memory, the new message counter shows an outdated 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 Yandex Mail page to the list of exceptions for that particular extension.

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 the browser loads the incoming mail page from memory, the new message counter shows an outdated 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 Yandex Mail page to the list of exceptions for that particular extension.

You are using an outdated browser

An outdated browser may not support the technologies used for fast and convenient page loading. Install the latest version of your browser the latest version of your browser.

Internet speed decreased

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 the problem:
You are using an outdated browser

An outdated browser may not support the technologies used for fast and convenient page loading. Install the latest version of your browser 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 choose Developer tools in the menu.
  2. Click the icon and choose your browser version.
    Note. If you use Internet Explorer of 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 Yandex Mail page to the list of exceptions for that particular extension.

Hieroglyphs or unintelligible characters appear when the page encoding is incorrect. Encoding might be changed by viruses and malware.

Check your computer for viruses using free antivirus programs, like CureIt! by Dr.Web or Kaspersky Virus Removal Tool.

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 Yandex Mail page to the list of exceptions for that particular extension.

Internet speed decreased

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 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.

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

  • “Please wait...”.

  • “Loading a page takes a long time”.

  • “Try refreshing the page or using the light version of 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 Yandex Mail page to the list of exceptions for that particular extension.

You are using an outdated browser

An outdated browser may not support the technologies used for fast and convenient page loading. Install the latest version of your browser the latest version of your browser.

If the recommendations above don't help, you may have problems for the following reasons:

Internet speed decreased

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 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 choose Developer tools in the menu.
  2. Click the icon and choose your browser version.
    Note. If you use Internet Explorer of 11 and higher, choose Edge.

The security certificate error message starts with a phrase:

  • “Your connection is not private”.
  • “This site threatens your computer security”.
  • “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 didn't start yet or that it is 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! by Dr.Web or Kaspersky Virus Removal Tool.

Disabling HTTPS connection checks in Kaspersky Internet Security
  1. Open the antivirus window and click the button in the bottom left 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. В блоке Интернет и электронная почта → Защита доступа в Интернет → Веб-протоколы → Настройка модуля сканирования HTTPS отключите опцию Включить проверку протокола HTTPS.!!!
  4. Click OK to save changes.