Why do I need a verification code to log in? What is the use of verification code?

Why do I need a verification code to log in? What is the use of verification code?

1. Maybe you used some unofficial software to log on to QQ, or hung QQ on the website. 2. I have logged into Q in some unsafe places, such as Internet cafes with unsafe factors. There is a virus Trojan in your computer. For example, if you are infected with a virus, you send some virus messages or deceptive messages, which are all caused by viruses. 4. Malicious QQ messages, being reported, forcibly deleting a large number of friends. At the same time, please don't provide your password when you log in the number, so that your friends can log in and try your QQ in other places. 6. It may also be caused by network problems, such as using proxies and unstable networks. Solution: Please use anti-virus software to thoroughly kill your computer in safe mode. I suggest you clear the local chat record of this number (search the QQ installation directory for the folder named after this number to delete! In the meantime, please uninstall all previous QQ versions and download the latest official QQ version for use. There is also the QQ number of the report. Please wait patiently for the observation time to pass. Over time, the verification code will disappear, but you need to do it again. The user number has two main numbers, so it is necessary to enter a solution to the problem of verification code. Recently, it has been found that a large number of numbers have two main numbers (that is, two people know that the number password is used in different places at different times), and the original number owner is not easy to find, so we introduce verification code to attract the attention of the real number owner and reduce the loss of the original number owner. I hope everyone can strengthen the awareness of number prevention and create a green and healthy online environment. The following are the specific reasons and solutions: specific reasons: 1, sending advertising messages: that is, you may be used by others to send advertisements or scam messages without your knowledge, thus being detected by the system. 2. Remote login: that is, your number is often logged in one place. When you suddenly detect a change in the landing place, a verification code will be added for security reasons. 3, the number has a hang-up behavior: under normal circumstances, the hacker will steal the user's property and number by helping the user hang up. Solution: 1 Change the password immediately after finding the verification code and kill the Trojan horse. 2. Enter the observation period after the verification code is needed, and the system will automatically log off after normal use of 10 ~ 20 days. If the password is leaked again during this period, you will continue to be asked to enter the verification code. If you need more information about the verification code, please see the following: Q: What is a verification code? A: QQ login uses a picture verification code, which is a picture containing irregular character information. Ordinary users can recognize character information with naked eyes, but the behavior of automatically logging in through malicious software (malicious users can log in to the system or website with illegal software without manually inputting numbers and passwords) will be effectively prevented. Q: What is the use of Q:QQ login verification code? A: When QQ logs in, the verification code is used to effectively prevent hackers from logging in a large number of stolen QQ numbers in time. Hackers may use your number to send spam advertisements and viruses, transfer Q coins and game points, cheat your friends, and even delete friends, quit the group, dissolve the group, etc. And the verification code greatly delays these harmful behaviors of hackers and minimizes your losses. Q: What can't I do with Q:QQ login verification code? What is the direction of future efforts? A: It can't prevent theft, transfer of qb and deletion of friends, but it can slow down the speed of modifying user data in batches, transfer of Q coins or spam. The future direction is to optimize performance, making it easier for good people to identify and more difficult for bad people to identify; The verification code is smarter, only for the bad guys, and does not affect the good guys. Q: Why does my QQ suddenly need to enter the login verification code when logging in? Answer: If you are prompted to enter the verification code when logging in with the correct number and password, there may be two reasons: 1. QQ password was stolen by others to send advertisements or scam messages without your knowledge, thus being detected by the system. 2. Some people in the used network (such as Internet cafes) engage in some behaviors that endanger the safety of QQ users (stealing numbers, sending fraudulent information, spam advertisements, etc.). ). Q: Why is the login verification code so difficult to identify? Answer: In order to deal with the verification code, the enemy used character recognition technology in the automatic login software (character recognition technology means that the computer automatically recognizes the characters in the picture without human eyes. Can be used by hackers to register, the verification code is spear and ......

What is the reason for the incorrect verification code?

If you get an error prompt after entering the verification code correctly, press F5 to refresh the page. If the operation is invalid, you can retry the following operations: 1, delete "cookies" 2, and restart the computer.

How to set it if I can't receive the verification code?

If you don't receive SMS verification code for a long time, it may be caused by the following reasons:

First, the number of acquisitions exceeded the limit.

Solution: You can only get the verification code three times a day. If you exceed the number of times today, please try again tomorrow.

Second, the mobile phone business does not support it.

Solution: At present, all segments of the three major domestic mobile operators have been supported. but

* * *, Xinjiang, Hong Kong, Macao and Taiwan and overseas mobile phone numbers

Will be limited by the business of mobile phone service operators, unable to handle mobile phone business. I suggest you try another mobile phone number.

Note: Some users transfer their numbers to the Internet.

Due to the change of data interface, it is temporarily impossible to receive short messages from third parties. Please call Netease customer service hotline for consultation.

Reason 3: Mobile phone security software interception (for smartphone users who have installed security software)

Solution: Open the mobile phone security software, temporarily turn off the interception function, and then try to get the verification code again.

Reason 4: SMS gateway is congested or abnormal.

Solution: When the SMS gateway is congested or abnormal, the sent SMS will be delayed or lost. I suggest you try again later.

Reason 5: Mobile phones are used abroad or overseas mobile phones are used.

Solution: Due to the influence of mobile phone service provider's business, the mobile phone cannot receive the verification code when it is used abroad or used abroad. It is recommended to replace the mobile phone as much as possible.

Reason 6: People around you can use it normally, but they can't get it.

Solution: It may be the phone itself. It is recommended to change the mobile phone card to someone else's mobile phone and try again.

If you encounter the page prompt "verification code error", I suggest you confirm whether the verification code is entered incorrectly. If more than one verification code is obtained, please enter the last verification code received.

What is the reason why the mobile phone can't receive the verification code?

First, the user's own mobile phone number is blocked by the operator.

You complained to the operator that this notification message was spam, which caused the message to be blocked by the operator.

Solution: You need to contact the operator to solve this problem.

2

Second, blacklist settings such as SMS security software.

You used to set strict interception rules in mobile phone text messages.

Solution: Check SMS blacklist settings, menu-> Harassment interception-> Settings, respectively, to see whether there is an interception mode and black and white list are not allowed to reach the number of SMS.

three

Third, the privacy settings of the internal browser of the mobile phone.

The security level of the browser is too high or the setting to block "third-party Cookie and website data" is set.

Solution: Reset the security level of the browser or turn off the setting of "blocking third-party Cookie" in the browser, and set-> Privacy settings-> Content settings.

Their mobile phone text messages have exceeded the maximum limit for one day.

In order to avoid short message bombing and waste of resources, some mobile phones set up a maximum of ten short messages per mobile phone number every day.

solution

Five, network wireless network, communication and other delays

Due to network or geographical problems, the authentication information sent by the server may be delayed.

Solution: Wait patiently, or try again after counting seconds.

Methods: You can't log in to the service that needs to verify the mobile phone on the same day.

Summary:

First, there are several situations in which the mobile phone cannot receive the verification code:

1, the mobile phone is equipped with interception software.

2. The mobile phone is turned off, there is no signal for the time being, and it is overdue or stopped.

3. You can't receive SP message on the first day of recharging after the mobile phone is in arrears.

4. The user has set a blacklist on the operator side.

5. The mobile phone can't receive short messages of more than 70 words.

6. The mobile phone is used abroad or used overseas.

7. The SMS storage is full.

8. Mobile phone networks and operators have failed in some areas.

2. If you can't receive the SMS verification code, I suggest you make an investigation according to the above situation, and you can refer to the following solutions:

1. Remove SMS interception of application software, or change your mobile phone.

2. Arrears for downtime are generally recovered within 24 hours after payment, and are basically recovered within 24 hours. I suggest you change your mobile phone number or pick it up the next day.

3. Contact the operator to cancel the blacklist.

4. If it is a signal network delay, you can try to get it later.

Last one, maybe you wrote the wrong number.

I can't get the verification code. What is the reason?

First, the user's own mobile phone number is blocked by the operator.

You complained to the operator that this notification message was spam, which caused the message to be blocked by the operator.

Solution: You need to contact the operator to solve this problem.

2

Second, blacklist settings such as SMS security software.

You used to set strict interception rules in mobile phone text messages.

Solution: Check SMS blacklist settings, menu-> Harassment interception-> Settings, respectively, to see whether there is an interception mode and black and white list are not allowed to reach the number of SMS.

three

Third, the privacy settings of the internal browser of the mobile phone.

The security level of the browser is too high or the setting to block "third-party Cookie and website data" is set.

Solution: Reset the security level of the browser or turn off the setting of "blocking third-party Cookie" in the browser, and set-> Privacy settings-> Content settings.

Their mobile phone text messages have exceeded the maximum limit for one day.

In order to avoid short message bombing and waste of resources, some mobile phones set up a maximum of ten short messages per mobile phone number every day.

solution

Five, network wireless network, communication and other delays

Due to network or geographical problems, the authentication information sent by the server may be delayed.

Solution: Wait patiently, or try again after counting seconds.

Methods: You can't log in to the service that needs to verify the mobile phone on the same day.

Summary:

First, there are several situations in which the mobile phone cannot receive the verification code:

1, the mobile phone is equipped with interception software.

2. The mobile phone is turned off, there is no signal for the time being, and it is overdue or stopped.

3. You can't receive SP message on the first day of recharging after the mobile phone is in arrears.

4. The user has set a blacklist on the operator side.

5. The mobile phone can't receive short messages of more than 70 words.

6. The mobile phone is used abroad or used overseas.

7. The SMS storage is full.

8. Mobile phone networks and operators have failed in some areas.

2. If you can't receive the SMS verification code, I suggest you investigate according to the above situation first, and refer to the following solutions:

1. Remove SMS interception of application software, or change your mobile phone.

2. Arrears for downtime are generally recovered within 24 hours after payment, and are basically recovered within 24 hours. I suggest you change your mobile phone number or pick it up the next day.

3. Contact the operator to cancel the blacklist.

4. If it is a signal network delay, you can try to get it later.

Last one, maybe you wrote the wrong number.

How to enter verification code

What if the verification code is always wrong? The following will tell you that entering the verification code is always a wrong solution. Green tea, I am fat, and sometimes I encounter the situation that the verification code is entered incorrectly. Why? How to solve it? Please see below.

-Cause of the problem 1

Enter the verification code using full-width characters. Almost all web pages are half-width characters, which are English characters. When entering the verification code, the web page with full-width characters cannot be recognized. When you encounter the problem that the verification code is always wrong, please carefully check the character mode used by the input method.

Solution:

Adjust the input method to a half-angle input state. Usually click the right mouse button in the status bar of the input method, and you can see the options of switching between full-width and half-width, and the difference between full-width and half-width, such as full-width character abcd and half-width character abcd.

What if the verification code is always wrong?

-Cause 2 of the problem

In addition to the effective time of verification code input, most verification code pages have set the effective time of verification code, which is generally 45 seconds. When the user stays on the page without verification code operation for more than 45 seconds, the current verification code will be invalid, and the page needs to be refreshed to input it correctly.

Solution: Try to ensure that the verification code is entered within the effective time, generally about 45 seconds. If the valid time is exceeded, please press F5 to refresh and re-enter.

-Cause of the problem 3

CookIEs in ie browser are blocked. When the "Privacy" of IE browser is set to the highest, all cookie files from web pages will be blocked, which makes it impossible to exchange necessary data with the web server.

Solution: Open IE browser and click the "Tools" menu above->; Select Internet Options-> Switch to Privacy Tab-> Drop down the slider under Settings and adjust the privacy setting to Medium->; Click ok-> to restart IE browser.

-Cause of the problem 4

The IE browser component is damaged or abnormal, and the IE component is tampered or damaged by malicious plug-ins, resulting in the input verification code always being wrong.

Solution: click "start" menu-> select "run"-> enter "regsvr32" at runtime.

Jscript.dll "(without quotation marks), press enter, and the system will prompt" DLLRegisterServer in jscript.dll succeeded ",and click OK-

& gt click "run"-> again to enter "regsvr32 vbscript.dll.

",press enter, the system will prompt" DLLRegisterServer in vbscript.dll succeeded ",and click OK->; After two IE fixes, I tried to refresh the webpage and re-enter the verification code.

If the above methods still can't solve the problem of incorrect verification code, please use anti-virus software such as 360 Security Guard and Kingsoft Internet Security to scan the whole system and remove Trojan virus.

What is the logical reason for generating verification code in software design?

In order to prevent users from using robots to automatically register, log in and irrigate, verification code technology is adopted. The so-called verification code is to generate a picture from a series of randomly generated numbers or symbols, and add some disturbing pixels to the picture (to prevent OCR). Users can identify the verification code information with naked eyes, enter the form and submit it to the website for verification. Only after the verification is successful can a function be used.

What if the browser can't always display the verification code?

The verification codes of many websites are small plug-ins to be downloaded. Like your question, IE should be set incorrectly. Click Tools, click IE option- click Advanced, one of which is to restart IE before enabling visual styles for web pages and plug-ins, and then try again.

What happened when I didn't receive the verification code?

If you don't receive SMS verification code for a long time, it may be caused by the following reasons: First, the number of times you receive it exceeds the limit. Solution: You can only get the verification code three times a day. If you exceed the number of times today, please try again tomorrow. Second, the mobile phone business does not support the solution: at present, the number segments of the three major mobile operators in China have been supported. The mobile phone numbers of * * *, Xinjiang, Hong Kong, Macao and Taiwan and overseas will be restricted by the business of mobile telephone service operators, so it is impossible to apply for mobile telephone service. I suggest you try to change another mobile phone number. Note: Some number-carrying users are temporarily unable to receive short messages from third parties due to the change of data interface. Please call Netease customer service hotline for consultation. Reason 3: Mobile phone security software interception (for smartphone users who have installed security software) Solution: Open the mobile phone security software, temporarily turn off the interception function, and then try to obtain the verification code again. Reason 4: SMS gateway is congested or abnormal. Solution: When the SMS gateway is congested or abnormal, the sent SMS will be delayed or lost. I suggest you try to get it in the future. Reason 5: The mobile phone is used abroad or used abroad. Solution: Due to the business influence of the mobile phone service operator, the mobile phone cannot receive the verification code when it is used abroad or overseas. It is recommended to replace the mobile phone as much as possible. Reason 6: People around you can use it normally, but they can't get a solution: it may be the problem of the mobile phone itself. It is recommended to change the mobile phone card to someone else's mobile phone and try again. If you encounter the page prompt "verification code error", I suggest you confirm whether the verification code is entered incorrectly. If more than one verification code is obtained, please enter the last verification code received. Follow-up: Neither. . I suddenly couldn't get it. . .

Why is it always wrong to enter the verification code?

When you enter the check code, there may be the following reasons: 1. The check code you entered does not match the picture.

Please confirm whether your input matches the picture, and remember that you can't use spaces between letters and numbers. If you confirm that the input is correct, then check whether it is the following reason. Second, you used the wrong input method.

Please confirm whether the input method you are using is English half-angle. (Refer to the figure below) Because the check code is only valid if you enter numbers and English letters in this state, otherwise you will be prompted that "the check code is entered incorrectly, please re-enter". 3. Your browser can't display the check code picture correctly.

If your check code is not displayed completely or clearly, please try to refresh the page. If it still cannot be displayed normally, please adjust your IE browser settings as follows.

Step 1: Open a browser and select "Tools" in the menu >; & gt Internet options.

Step 2: Select the deleted file of "Temporary Internet Files" in "General" and select "Clear History".

Step 3: Close the browser, reopen the registration page and try again.