1, website domain name. First look at the domain name is not expired, if the website domain name expires, then the site is not open normally. Although this situation occurs less, but it is easy to be ignored. Therefore, we can first take into account this problem when troubleshooting the site can not open the factors.

In addition, in addition to the expiration of the domain name of the site, but also to consider whether the domain name resolution problems. If the hacker attacked or launched a domain name resolution configuration, then the site is also unable to open normally.

2, web space problems. General site can not be opened normally the vast majority of factors are due to web space lead | up. For example, the number of connections to limit, or CPU, memory and other configurations can not meet the actual demand, then open the site will be slower. Then if the site to choose a traffic package, more than then can not access the site normally. Moreover, if you choose virtual hosting, the same IP other sites use more bandwidth, then it will also affect the normal use of our site.

3, site program issues. Speaking of website programs, this is basically the possibility of some bugs, such as the content of the call or code writing problems. If this happens, we need to view the entire site program out of the abnormal place, and then modify. Basically, this happens when the site is mounted or attacked.

4, the impact of policy. Some sites may choose the overseas web hosting, do not have to record, but may upload some sensitive words, was detected after the seizure, this situation is also more.

5, local network factors. This factor is better to exclude, generally if the enterprise this situation, as far as possible to find other people to visit the site, if the site can be accessed normally, then it is their own office network anomaly.