MobileRead Forums - View Single Post - Problem with Calibre security certificate

GeorgePP · 04-03-2016, 09:08 AM

Thanks for the reply, I misunderstood and thought it would be a zip file containing all the plugins.

As promised, reporting back hoping it may help someone with a similar problem.
As you suggested my AV program was the problem. After some research on the net I got a hint of similar problems on the Kaspersky forum. Apparently the program’s setting to scan encrypted connections causes the problem.

This is what worked:
Kasperksy 2016 Internet Security: open Settings > Additional > Network:
Encrypted connections scanning section, you can enable/disable scanning for encrypted connections that use the SSL protocol.
1.Do not scan encrypted connections
If this option is selected, Kaspersky Internet Security does not scan SSL traffic.
2.Scan encrypted connections upon request from protection components
This option is selected by default.
3.Always scan encrypted connections
Advanced Settings
Clicking this link opens a window in which you can modify additional settings for secure connections and install the Kaspersky Lab certificate.

As a first step as recommended I disabled option 2 and enabled option 1 > Do not scan encrypted connections. Starting calibre, the warning of a bad Security certificate disappeared and the links to the calibre site for the plugins worked normally.

As this step diminishes the security provided by KAV, I tested the next suggestion which apparently works for most such cases. I re-enabled option 2 and opened the Advanced Settings and installed the Kaspersky Lab certificate. Everything still works as before.

I think this has solved the problem and that KAV was acting as the MiTM agent causing it. Would be very happy to hear your comments and again thanks for your help.

04-03-2016, 09:08 AM	#8
GeorgePP Junior Member Posts: 5 Karma: 10 Join Date: May 2012 Device: Kindle + Aldi	Thanks for the reply, I misunderstood and thought it would be a zip file containing all the plugins. As promised, reporting back hoping it may help someone with a similar problem. As you suggested my AV program was the problem. After some research on the net I got a hint of similar problems on the Kaspersky forum. Apparently the program’s setting to scan encrypted connections causes the problem. This is what worked: Kasperksy 2016 Internet Security: open Settings > Additional > Network: Encrypted connections scanning section, you can enable/disable scanning for encrypted connections that use the SSL protocol. 1.Do not scan encrypted connections If this option is selected, Kaspersky Internet Security does not scan SSL traffic. 2.Scan encrypted connections upon request from protection components This option is selected by default. 3.Always scan encrypted connections Advanced Settings Clicking this link opens a window in which you can modify additional settings for secure connections and install the Kaspersky Lab certificate. As a first step as recommended I disabled option 2 and enabled option 1 > Do not scan encrypted connections. Starting calibre, the warning of a bad Security certificate disappeared and the links to the calibre site for the plugins worked normally. As this step diminishes the security provided by KAV, I tested the next suggestion which apparently works for most such cases. I re-enabled option 2 and opened the Advanced Settings and installed the Kaspersky Lab certificate. Everything still works as before. I think this has solved the problem and that KAV was acting as the MiTM agent causing it. Would be very happy to hear your comments and again thanks for your help.