Hi, it would be easier to translate if you select the text in the page and copy/paste here. I think maybe Command+A will select all the text in the error page?

Do other sites work besides Gmail, or are no sites working?

Hi, ok here it is:

                                                                                                                                                                                  oops, the website https: // mail / u / 0 / # inbox has experienced a network protocol violation that cannot be repaired

The page you are trying to view may not be displayed due to an error in the data transfer detected. Contact the owners of the site to inform them of this problem.

I can´t open firefox, I use Safari now

Can you help me to solve the problem? Thank you, Katti

Hmm, in the program code, I see two situations where that error message would be displayed --

     case NS_ERROR_CORRUPTED_CONTENT:
       // Broken Content Detected. e.g. Content-MD5 check failure.
       error = "corruptedContentErrorv2";
       break;
     case NS_ERROR_INTERCEPTION_FAILED:
       // ServiceWorker intercepted request, but something went wrong.
       error = "corruptedContentErrorv2";
       break;

-- but I don't know what is going wrong to cause this situation.

Have you already tried --

Cache and Cookies: When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.

(1) Clear Firefox's Cache

See: How to clear the Firefox cache

If you have a large hard drive, this might take a few minutes.

(2) Remove the site's cookies (save any pending work first). While viewing a page on the site, click the lock icon at the left end of the address bar. After a moment, a "Clear Cookies and Site Data" button should appear at the bottom. Go ahead and click that.

In the dialog that opens, you will see one or more matches to the current address so you can remove the site's cookies individually without affecting other sites.

Then try reloading the page. Does that help?