Upon logoff from web-site this error occurs: Validation of viewstate MAC failed.

I know not who owns the spurious error, my-install, the WEB-site, or Firefox. The circumstance is the clicking of log-out. None the less documentation is included. Dennis.

Thank you for the direction, I know now where to go. Your stewardship is appreciated.
PS 1st shot at this 'board' thing, I followed with a click on solved-it & found that my vote was in error.

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