My Twitter Won't Let Me Tweet: What Do I Do?

Check that you are using the correct username and password to access the Twitter website. You may need to log out and back in again to re-authenticate your credentials. Clear your browser's temporary data cache and cookies to ensure Twitter recognizes who you are and that you are entitled to tweet from your account. If you are attempting to tweet the same update twice, Twitter will block this with an error message.

If you are experiencing trouble with a mobile Twitter app, check that you have an active data connection by testing it through another app. Uninstall and reinstall the app to clear out the program's data cache and reset its settings. Make sure you are using the right username and password to log into the app. A problem with the app may prevent you from seeing your tweet even when it has been sent, so check your Twitter profile to confirm the tweet hasn't been displayed.

Problems with tweeting from a third-party client may lie with the source code, a key settings file or a more general problem affecting your device or computer -- a lack of Internet connectivity, for example. Check that you have entered the correct account login information into the client's settings screen. If problems persist, uninstall and reinstall the client, which resets the application's settings and replaces any files that may have become corrupted or been erased.

Twitter imposes certain limits on the number of tweets each user can send to prevent its network being overloaded. Each user is limited to 1,000 tweets per day, and this restriction is sub-divided into smaller limits for each half hour. If you have recently sent a lot of tweets or retweets, you may have to wait before you can tweet again. Alternatively, a technical problem with the Twitter platform may be preventing you from tweeting. Check the official Twitter support pages (see Resources) for details of any current known issues.