Android SDK Manager doesn't work: Download interrupted: "Tag mismatch"

Question

I'm getting started on android developing. I've "played" a little bit with eclipse and now I'm trying some online examples dealing with streaming.

The thing is it seems I don't have the packages installed as, while debugging, I got the following error message: Source not found.

So, I tried to get the packages going to the SDK manager, selecting them and clicking Install.

And my problem is the following: I can't install them and don't know why.

Answer 1

The "tag mismatch" error has to do with SSL and security certificates. While I don't know why the SSL is having a problem, in Android SDK manager you can skip using SSL encryption at all by clicking on tools >> options >> and check the box for "force https:// sources to be fetched using http://".

I was able to download the packages that way.

Answer 2

For me it was all about the Internet connection. Running wifi over 5Ghz/ac was too fast(!?) and the "tag mismatch"-problem was gone when connected through 2.4Ghz.

The same problem and solution applied when installing some new gradle dependencies in Android Studio.