This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Received the error message "Unable to open the temporary file C:\Users\<user>\AppData\Local\Temp\nsmail.tmp. Check your 'Temporary Directory' setting." Where c

  • 8 replies
  • 5 have this problem
  • 11 views
  • Last reply by christ1

lawrencewest57
lawrencewest57
more options

I received the following message when trying to forward an email: "Sending of the message failed. Unable to open the temporary file C:\Users\<user>\AppData\Local\Temp\nsmail.tmp. Check your 'Temporary Directory' setting." Note that the directory does not exit. OS is Windows 10. Where do I find this setting?

I received the following message when trying to forward an email: "Sending of the message failed. Unable to open the temporary file C:\Users\<user>\AppData\Local\Temp\nsmail.tmp. Check your 'Temporary Directory' setting." Note that the directory does not exit. OS is Windows 10. Where do I find this setting?

All Replies (8)

christ1
christ1
  • Top 25 Contributor
more options

What is your anti-virus software?

rxtomsn
rxtomsn
more options

christ1 said

What is your anti-virus software?

Windows 7 with windows essentials antivirus. thanks for your help

rxtomsn
rxtomsn
more options

Windows 7 with windows essentials antivirus. thanks for your help

christ1
christ1
  • Top 25 Contributor
more options

rxtomsn,

Please start a new thread for your problem.

lawrencewest57
lawrencewest57 Question owner
more options

McAfee. (and it's Windows 10 not 7)

rxtomsn
rxtomsn
more options

christ1, I TRIED to start new question, but it keeps winding up here...sorry rex thompson

christ1
christ1
  • Top 25 Contributor
more options

https://wiki.mozilla.org/Thunderbird:Testing:Antivirus_Related_Performance_Issues#McAfee

christ1
christ1
  • Top 25 Contributor
more options
I TRIED to start new question, but it keeps winding up here...

https://support.mozilla.org/en-US/questions/new

Modified by christ1