我已经在 Options 的 HTTPS 勾选了所有的项目，也点击了 Trust Root Certificate，并且也确认了。我按照同样的方法在别的电脑（也是win7 64位）是可以抓到https包的，但是在我的电脑就不行，望大神解救。以下是fiddler的log信息。
22:09:04:4317 /Fiddler.CertMaker> Invoking CertEnroll for Subject: CN=*.dec.sitefinity.com, O=DO_NOT_TRUST, OU=Created by http://www.fiddler2.com; Thread's ApartmentState: MTA
22:09:04:4337 !ERROR: Failed to generate Certificate using CertEnroll. System.Reflection.TargetInvocationException 调用的目标发生了异常。 < CertEnroll::CX509PrivateKey::put_ProviderName: 指定了无效的提供程序。 0x80090013 (-2146893805)
22:09:04:4337 !Fiddler.CertMaker> Failed to create certificate for '*.dec.sitefinity.com'.
22:09:04:4357 /Fiddler.CertMaker> Root Certificate located; private key in container '7b90a71bfc56f2582e916a51aed6df9a_d2bcced7-cfdf-46df-84d1-e810a6be5d60'
22:09:04:4357 !Fiddler.CertMaker> Tried to create cert for '*.dec.sitefinity.com', but can't find it from thread 132!
22:09:04:4357 fiddler.https> Failed to obtain certificate for api.dec.sitefinity.com due to Certificate Maker returned null when asked for a certificate for api.dec.sitefinity.com
22:09:28:8741 HTTPSLint> Warning: ClientHello record was 508 bytes long. Some servers have problems with ClientHello's greater than 255 bytes. https://github.com/ssllabs/research/wiki/Long-Handshake-Intolerance
22:09:28:8811 /Fiddler.CertMaker> Invoking CertEnroll for Subject: CN=*.baidu.com, O=DO_NOT_TRUST, OU=Created by http://www.fiddler2.com; Thread's ApartmentState: MTA
22:09:28:8821 !ERROR: Failed to generate Certificate using CertEnroll. System.Reflection.TargetInvocationException 调用的目标发生了异常。 < CertEnroll::CX509PrivateKey::put_ProviderName: 指定了无效的提供程序。 0x80090013 (-2146893805)
22:09:28:8821 !Fiddler.CertMaker> Failed to create certificate for '*.baidu.com'.
22:09:28:8851 /Fiddler.CertMaker> Root Certificate located; private key in container '7b90a71bfc56f2582e916a51aed6df9a_d2bcced7-cfdf-46df-84d1-e810a6be5d60'
22:09:28:8851 !Fiddler.CertMaker> Tried to create cert for '*.baidu.com', but can't find it from thread 162!
22:09:28:8851 fiddler.https> Failed to obtain certificate for hm.baidu.com due to Certificate Maker returned null when asked for a certificate for hm.baidu.com
22:09:35:0995 HTTPSLint> Warning: ClientHello record was 508 bytes long. Some servers have problems with ClientHello's greater than 255 bytes. https://github.com/ssllabs/research/wiki/Long-Handshake-Intolerance
22:09:35:1055 /Fiddler.CertMaker> Invoking CertEnroll for Subject: CN=*.gcp.gvt2.com, O=DO_NOT_TRUST, OU=Created by http://www.fiddler2.com; Thread's ApartmentState: MTA
22:09:35:1085 !ERROR: Failed to generate Certificate using CertEnroll. System.Reflection.TargetInvocationException 调用的目标发生了异常。 < CertEnroll::CX509PrivateKey::put_ProviderName: 指定了无效的提供程序。 0x80090013 (-2146893805)
22:09:35:1085 !Fiddler.CertMaker> Failed to create certificate for '*.gcp.gvt2.com'.
22:09:35:1125 /Fiddler.CertMaker> Root Certificate located; private key in container '7b90a71bfc56f2582e916a51aed6df9a_d2bcced7-cfdf-46df-84d1-e810a6be5d60'
22:09:35:1125 !Fiddler.CertMaker> Tried to create cert for '*.gcp.gvt2.com', but can't find it from thread 129!
22:09:35:1135 fiddler.https> Failed to obtain certificate for beacons.gcp.gvt2.com due to Certificate Maker returned null when asked for a certificate for be
可能是你的电脑开启了防火墙，如果是，你把它关闭试试
楼上两位都说了证书问题，另外还有一个问题就是，装有fiddler的电脑，是不是和手机在同一个局域网内。
fiddler很容易卡住，打开fiddler一分钟后，链接的手机都在转圈进不去链接，关闭fiddler在打开就好了，等一下又转圈了，如此反复，关闭fiddler的时候会有一个提示大框，一闪而过看不清楚里面的内容，求大神指点
（1）首先，看看火狐浏览器的配置，是不是下方“为所有协议使用相同代理”的地方没有勾选上，如果是，请勾选上。
这里写图片描述
有一部分同学做到这一步应该能解决无法抓https的问题。如果还不行，请继续往下看。
一般这个时候，还不行，应该就是你的证书问题了，有些同学可能会问，我是按照正常流程导出并安装的证书，也会有问题？
对的，就是这么奇怪。
（2）接下来，请在下面这个地方输入certmgr.msc并回车，打开证书管理。
应该是证书问题，检查一下吧
证书问题，下个证书就好了
多谢各位的热心解答，我把防火墙也关了，证书也下了，还是捕捉不到 HTTPS 包。。。。
证书问题，参考下：http://blog.csdn.net/d1240673769/article/details/74298429