vs2015.update5 社区版 30 天过期了怎么办？在内网

插个 USB 无线网卡, 连手机热点.
如果这都不允许的话, 我觉得应该找 IT 解决问题.

@sun1991 涉密电脑应该绝不允许接触到公网的。

@nanaw 那这个问题就应该由 IT 来解决.

类似情况

可以试试下面的解决方案

To bypass "30days left must go online to sign-in", sign-in once to Microsoft account, you'll get %LocalAppData%\Microsoft\VSCommon\OnlineLicensing folder that you can copy to offline PCs.

来源： https://stackoverflow.com/questions/43390466/visual-studio-community-is-a-30-day-trial

还发现了一个有趣的玩法……

IMPORTANT DISCLAIMER: Information provided below is for educational purposes only! Extending a trial period of Visual Studio Community 2017 might be ILLEGAL!

So let's get started.

Registry key of interest: HKEY_CLASSES_ROOT\Licenses\5C505A59-E312-4B89-9508-E162F8150517\08878. I assume the 08878 subkey may differ from installation to installation (why not, isn't?). I have tested only on my own one. So check other subkeys if you can not match proper values described below. Binary value stored in that key is encrypted with CryptProtectData. So decrypt it first with CryptUnprotectData. Bytes of interest (little-endian):

[-16] and [-15] is a year of expiration;
[-14] and [-13] is a month of expiration;
[-12] and [-11] is a day of expiration.
Increasing these values (preferable the year :) ) WILL extend your trial period and get rid of a blockig screen! I know nothing of such a tool that allows to edit encrypted registry values, so my small program in C++ and Windows API looks like:

RegGetValue
CryptUnprotectData
Data.pbData[Data.cbData-16]++;
CryptProtectData
RegSetValue
Actual language doesn't matter if you have access to registry and crypto functions in your language. I'm just fluent in C++. Sorry, I do not publish a ready-to-use code for ethical reason.

1.买 license

2.联网
总有一个能做到