Unknown Host dl-ssl.google.com , failed to fetch different URLs

Question

This is the error I am getting after starting SDK manager and also while updating or downloading packages(Download interrupted: Unknown Host dl-ssl.google.com). My ADT is also updated to Build: v22.6.2-1085508. I have read all the post regarding this and tried

1. Using https instead of http while using Help>install new software (getting error could not find https://dl-ssl.google.com/android/eclipse/)
2. No proxy.
3. Run SDK with admin privilege.
4. No firewall blocking .

I am not able to post the image because I am a new user , so i m copying the error and posting it , please don't mind . This is type of error with many links like this ..

Failed to fetch URL https://dl-ssl.google.com/android/repository/sys-img/android-wear/android-wear-sys-img.xml, reason: IO Unknown Host dl-ssl.google.com Done loading packages.

Also I have read many answers on this site and other but nothing has helped so far. Please help me . Thank you

Answer 1

Just wanted to add how I solved this problem if anyone comes here looking for an answer. Comodo firewall runs in background even if you disable the firewall and that causes problem with SDK . I had the same problem. Steps I took to resolve my problem:

1. run comodo settings
2. defense+
3. list active processes
4. add adb.exe to trusted processes
5. restart server: run "adb kill-server" "adb start-server"

For Comodo 6.x

1. Open Comodo
2. Click Tasks Icon at right top
3. Click Advanced Tasks
4. Click Open Advanced Settings
5. Select Security Settings --> File Rating --> Trusted files from left panel
6. Click on the upward arrow icon at the bottom

Answer 2

This might be because of Android SDK Manager not being able to connect to Google server. This article helped me a lot:

Tools > Options... and check Force https://... sources to be fetched using http://...

Answer 3

I was also getting same error : Unknown Host Errors while installing ADT plugin in eclipse

Go to Setting -> Default setting -> select "Android SDK" from left side Panel. Select required components Which you want to install. - >Apply -> Ok.

Please let me know if still you are facing issue.

Regard, Pappu.