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Following a Win 10 upgrade the mouse behaves as if both left and right buttons have been pressed in Firefox & Thunderbird

Posted

Have just had a major upgrade of Windows 10. Now clicking the left mouse button has the effect of clicking the right button too. Apps other than Firefox and Thunderbird seem unaffected. Mouse settings in Control Panel look normal.

Have just had a major upgrade of Windows 10. Now clicking the left mouse button has the effect of clicking the right button too. Apps other than Firefox and Thunderbird seem unaffected. Mouse settings in Control Panel look normal.

Chosen solution

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

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Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0

More Information

FredMcD
  • Top 10 Contributor
4307 solutions 60475 answers

Chosen Solution

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode] {web link} by holding down the '''<Shift> ''(Mac=Options)''''' key, and then starting Firefox. A small dialog should appear. Click '''Start In Safe Mode''' (not Refresh). Is the problem still there?

Question owner

Problem disappeared over lunchtime (it was genuine!). Good to know about safe mode.

Problem disappeared over lunchtime (it was genuine!). Good to know about safe mode.
FredMcD
  • Top 10 Contributor
4307 solutions 60475 answers

Glad to help. Safe Surfing.

Glad to help. Safe Surfing.