The Error 80048821. That is merely another error message Live messenger internet users can get. Many reasons exist why most people could not login to the very account. Let us try and focus on all of them.
The most common event is usually that the password or maybe username may be wrong. So we would recommend that you check this initially. Type again the account details properly and determine if that can remove the specific situation. On top of that verify that Capslock is active on your current computer keyboard. In the event the problem still wasn't solved you could try these ways:
1. Have a look at your system clock and make sure it is actually right
2. Take a look at your firewall program to see if Windows Live is maybe blocked. On the other hand you can include Windows Live in the authorized software applications or maybe switch off the firewall program and take a look at it. In an effort to implement the new options you have to restart your pc. Look at what goes on following the reboot.
3. Clear out the cookies plus browser cache. Start up the IE, then click on Tools on the menu, and after that select Internet Options. As soon as the new screen starts hit Delete Files and after that Delete cookies. The next phase is to use a the Security settings. In Internet Explorer pick and choose Tools; and then also Internet options, choose Advanced. After you reach there within Security uncheck the option Check for server certificate revocation. The options Use SSL 2.0? as well as Use SSL 3.0? must be verified, too. There after simply click OK and that's it.
4. In the start menu simply click Run. Within the new screen insert: regsvr32 softpub.dll and click on OK. From then on type in regsvr32 wintrust.dll, and as well simply click OK. And now type: regsvr32 initpki.dll finally simply click OK.
These ways can very likely eliminate your concerns. In case the trouble stays present, it is better to receive a expert help.