Gentile Michele,

ti ringrazio per averci contattati. 
Potresti per favore dare una occhiata al seguente post https://helpcenter.websitex5.com/fr/post/157200 e seguire attentamente le istruzioni riportate al suo interno?

Fammi sapere se riesci a risolvere correttamente. 
Grazie!
Samantha

GRazie Samantha,

Purtroppo non trovo le righe che iniziano con Winsock, come procedo?

================== Internet (Whitelisted) ====================

(If an item is included in the fixlist, if it is a registry item it will be removed or restored to default.)

Tcpip\Parameters: [DhcpNameServer] 192.168.1.1
Tcpip\..\Interfaces\{B1CE189A-D8DB-403C-BB3C-A8BB71F698B7}: [DhcpNameServer] 192.168.1.1

Internet Explorer:
==================
HKU\S-1-5-21-3345517274-3126600255-1910164701-1001\Software\Microsoft\Internet Explorer\Main,Start Page = hxxp://www.mondo4x4.it/
SearchScopes: HKLM -> DefaultScope {0633EE93-D776-472f-A0FF-E1416B8B2E3A} URL = hxxp://it.yhs4.search.yahoo.com/yhs/search?hspart=iry&hsimp=yhs-fullyhosted_003&type=wncy_frg01_15_32&param1=1&param2=f%3D4%26b%3DIE%26cc%3Dit%26pa%3DWincy%26cd%3D2XzuyEtN2Y1L1QzuyByEtByB0E0A0BtDtDyB0DtCtCtDtCzytN0D0Tzu0StCtAtCtDtN1L2XzutAtFtCtBtFyDtFtAtN1L1Czu1TtN1L1G1B1V1N2Y1L1Qzu2StBtByCtD0FyByByCtGyDyB0E0AtGyB0B0FtBtGtA0DtCyEtGtC0DzzzzyEtD0EtB0FyD0A0A2QtN1M1F1B2Z1V1N2Y1L1Qzu2StC0EyByC0EtB0CyDtG0AyB0EtDtGyE0BtBtAtGzy0B0ByCtGyE0AtCtCtB0ByByE0DzztB0D2QtN0A0LzuyE%26cr%3D1037039230%26a%3Dwncy_frg01_15_32%26os%3DWindows%2B8.1%2BPro&p={searchTerms}
SearchScopes: HKLM -> {0633EE93-D776-472f-A0FF-E1416B8B2E3A} URL = hxxp://it.yhs4.search.yahoo.com/yhs/search?hspart=iry&hsimp=yhs-fullyhosted_003&type=wncy_frg01_15_32&param1=1&param2=f%3D4%26b%3DIE%26cc%3Dit%26pa%3DWincy%26cd%3D2XzuyEtN2Y1L1QzuyByEtByB0E0A0BtDtDyB0DtCtCtDtCzytN0D0Tzu0StCtAtCtDtN1L2XzutAtFtCtBtFyDtFtAtN1L1Czu1TtN1L1G1B1V1N2Y1L1Qzu2StBtByCtD0FyByByCtGyDyB0E0AtGyB0B0FtBtGtA0DtCyEtGtC0DzzzzyEtD0EtB0FyD0A0A2QtN1M1F1B2Z1V1N2Y1L1Qzu2StC0EyByC0EtB0CyDtG0AyB0EtDtGyE0BtBtAtGzy0B0ByCtGyE0AtCtCtB0ByByE0DzztB0D2QtN0A0LzuyE%26cr%3D1037039230%26a%3Dwncy_frg01_15_32%26os%3DWindows%2B8.1%2BPro&p={searchTerms}
SearchScopes: HKU\S-1-5-21-3345517274-3126600255-1910164701-1001 -> DefaultScope {9D57E79C-1241-4AA8-AB55-A27E9479EBE4} URL = hxxp://www.google.it/#hl=it&source=hp&q={searchTerms}&aq=f&aqi=g10&aql=&oq=&gs_rfai=&fp=9fca69c98b5d77d7
SearchScopes: HKU\S-1-5-21-3345517274-3126600255-1910164701-1001 -> {0633EE93-D776-472f-A0FF-E1416B8B2E3A} URL =
SearchScopes: HKU\S-1-5-21-3345517274-3126600255-1910164701-1001 -> {2f23ab71-4ac6-41f2-a955-ea576e553146} URL =
SearchScopes: HKU\S-1-5-21-3345517274-3126600255-1910164701-1001 -> {95B7759C-8C7F-4BF1-B163-73684A933233} URL = hxxps://mysearch.avg.com/search?cid={7D31FB35-C998-491E-A66D-F0DF8FBD28CF}&mid=e97390e068c547cca135a56eac54ee22-2ff2a4a092e6a6a85af5b3e37a2149fc74ab0077&lang=it&ds=AVG&coid=avgtbavg&cmpid=0516piz&pr=fr&d=2016-06-20 11:43:02&v=4.3.1.831&pid=wtu&sg=&sap=dsp&q={searchTerms}
SearchScopes: HKU\S-1-5-21-3345517274-3126600255-1910164701-1001 -> {9D57E79C-1241-4AA8-AB55-A27E9479EBE4} URL = hxxp://www.google.it/#hl=it&source=hp&q={searchTerms}&aq=f&aqi=g10&aql=&oq=&gs_rfai=&fp=9fca69c98b5d77d7
SearchScopes: HKU\S-1-5-21-3345517274-3126600255-1910164701-1001 -> {C0C3A6C6-03BC-4195-8FCB-AEA091301353} URL = hxxps://it.search.yahoo.com/search?fr=vmn&type=vmn__webcompa__1_0__ya__ch_WCYID10293__160727__yaie&p={searchTerms}
BHO: Skype for Business Browser Helper -> {31D09BA0-12F5-4CCE-BE8A-2923E76605DA} -> C:\Program Files\Microsoft Office 15\root\VFS\ProgramFilesX64\Microsoft Office\Office15\OCHelper.dll [2016-08-16] (Microsoft Corporation)
BHO: No Name -> {95B7759C-8C7F-4BF1-B163-73684A933233} -> No File
BHO: Microsoft SkyDrive Pro Browser Helper -> {D0498E0A-45B7-42AE-A9AA-ABA463DBD3BF} -> C:\Program Files\Microsoft Office 15\root\VFS\ProgramFilesX64\Microsoft Office\Office15\GROOVEEX.DLL [2016-09-06] (Microsoft Corporation)
BHO-x32: PDF Architect 3 Helper -> {06E08260-0695-4EC1-A74B-1310D8899D93} -> C:\Program Files (x86)\PDF Architect 3\creator-ie-helper.dll [2015-09-17] (pdfforge GmbH)
Toolbar: HKLM-x32 - PDF Architect 3 Toolbar - {2DFF3579-5AA7-45B9-9328-1D38EA230861} - C:\Program Files (x86)\PDF Architect 3\creator-ie-plugin.dll [2015-09-17] (pdfforge GmbH)
Handler-x32: osf - {D924BDC6-C83A-4BD5-90D0-095128A113D1} - C:\Program Files\Microsoft Office 15\root\Office15\MSOSB.DLL [2016-04-20] (Microsoft Corporation)
StartMenuInternet: IEXPLORE.EXE - iexplore.exe

FireFox:
========
FF DefaultProfile: 6vrhi2fl.default
FF ProfilePath: C:\Users\Privato\AppData\Roaming\Mozilla\Firefox\Profiles\6vrhi2fl.default [2016-07-27]
FF DefaultSearchEngine: Mozilla\Firefox\Profiles\6vrhi2fl.default -> Yahoo®
FF SelectedSearchEngine: Mozilla\Firefox\Profiles\6vrhi2fl.default -> Yahoo®
FF Homepage: Mozilla\Firefox\Profiles\6vrhi2fl.default -> hxxps://it.yahoo.com/?fr=vmn&type=vmn__webcompa__1_0__ya__hp_WCYID10293__160727__yaff
FF NewTab: Mozilla\Firefox\Profiles\6vrhi2fl.default -> hxxps://it.yahoo.com/?fr=vmn&type=vmn__webcompa__1_0__ya__hp_WCYID10293__160727__yaff
FF SearchPlugin: C:\Users\Privato\AppData\Roaming\Mozilla\Firefox\Profiles\6vrhi2fl.default\searchplugins\yahoo-lavasoft.xml [2016-07-27]
FF HKLM-x32\...\Firefox\Extensions: [***] - C:\Program Files (x86)\PDF Architect 3\resources\pdfarchitect3firefoxextension
FF Extension: (PDF Architect 3 Creator) - C:\Program Files (x86)\PDF Architect 3\resources\pdfarchitect3firefoxextension [2015-09-30] [not signed]
FF Plugin: @adobe.com/FlashPlayer -> C:\Windows\system32\Macromed\Flash\NPSWF64_23_0_0_205.dll [2016-10-26] ()
FF Plugin-x32: @adobe.com/FlashPlayer -> C:\Windows\SysWOW64\Macromed\Flash\NPSWF32_23_0_0_205.dll [2016-10-26] ()
FF Plugin-x32: @Apple.com/iTunes,version=1.0 -> C:\Program Files (x86)\iTunes\Mozilla Plugins\npitunes.dll [2015-01-06] ()
FF Plugin-x32: @microsoft.com/SharePoint,version=14.0 -> C:\Program Files\Microsoft Office 15\root\Office15\NPSPWRAP.DLL [2016-02-08] (Microsoft Corporation)
FF Plugin-x32: Adobe Reader -> C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AIR\nppdf32.dll [2016-10-01] (Adobe Systems Inc.)
FF Plugin-x32: PDF Architect 3 -> C:\Program Files (x86)\PDF Architect 3\np-previewer.dll [2015-09-17] (pdfforge GmbH)
FF Plugin HKU\S-1-5-21-3345517274-3126600255-1910164701-1001: @unity3d.com/UnityPlayer,version=1.0 -> C:\Users\Privato\AppData\LocalLow\Unity\WebPlayer\loader\npUnity3D32.dll [2016-03-11] (Unity Technologies ApS)

Gentile Michele,

ti ringrazio per i dettagli forniti.
Ti chiedo di provare ancora questa procedura ufficile di Microsoft per favore:https://support.microsoft.com/it-it/kb/299357

Per riassumere brevemente e renderla più semplice, i comandi da eseguire sono i seguenti:

• apri il pront dei comandi dal menu start, puoi digitare CMD. clicca sull'icona del pront dei comandi e scegli l'opzione "esegui come amministratore".
• scrivi il seguente commando: netsh int ip reset c:\resetlog.txt
• e inviaci il file di log per verifica.
• se per qualche notivo non riesci a generare il file di log puoi anche provare solo con questo comando: netsh int ip reset
• infine riavvia il pc e fammi sapere.

Attendo tuoi aggiornamenti!

Grazie mille!
Samantha