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Can't send an email to anyone. Can read and receive but it says there's a problem with address and there isn't.

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When I try to send or respond to emails, a block comes up and says there's a problem with the address but there isn't. I've tried it with several addressees. I've turned off the computer, restarted the computer, updated a plug-in, removed TRUE Key which I added just the other day. It worked this morning but not in the last few hours.

When I try to send or respond to emails, a block comes up and says there's a problem with the address but there isn't. I've tried it with several addressees. I've turned off the computer, restarted the computer, updated a plug-in, removed TRUE Key which I added just the other day. It worked this morning but not in the last few hours.

Chosen solution

I am assuming that you are attempting to use a web based email service.

Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. To clear cache and cookies do the following:

  1. Click the menu button New Fx Menu, choose History, and then "Clear Recent History...".
  2. Under "Time range to clear", select "Everything".
  3. Now, click the arrow next to Details to toggle the Details list active.
  4. From the details list, check Cache and Cookies and uncheck everything else.
  5. Now click the "Clear Now" button.

Further information can be found in the Delete browsing, search and download history on Firefox article.

If you are referring to Mozilla Thunderbird, please post your question on the Thunderbird support forum.

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Chosen Solution

I am assuming that you are attempting to use a web based email service.

Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. To clear cache and cookies do the following:

  1. Click the menu button New Fx Menu, choose History, and then "Clear Recent History...".
  2. Under "Time range to clear", select "Everything".
  3. Now, click the arrow next to Details to toggle the Details list active.
  4. From the details list, check Cache and Cookies and uncheck everything else.
  5. Now click the "Clear Now" button.

Further information can be found in the Delete browsing, search and download history on Firefox article.

If you are referring to Mozilla Thunderbird, please post your question on the Thunderbird support forum.

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thank you, Wesley. I did that last night but tried to open it too soon, I guess. This morning all is well. Must be those darn cookies. I appreciate your help. Shannon

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Glad I could help. Thanks for contacting Mozilla support.