https://community.usa.canon.com/t5/Scanners/scanner-canoscan-LIDE-500f-twain-driver-disappeared/m-p/345132#M1111 <P>I don't use my scanner often (Windows 7 Pro, so supported), but tried to use it the other day and it says the twain driver is missing.</P><P>&nbsp;</P><P>Tried reloading software/drivers (current) and the twain driver.&nbsp; No help.&nbsp; I don't think the twain driver is reloading, it just runs and then is gone.</P><P>&nbsp;</P><P>I've tried the delete driver utility and reload, still no help.&nbsp;</P><P>&nbsp;</P><P>What else can I do?</P> Mon, 14 Jun 2021 23:00:35 GMT rwernst 2021-06-14T23:00:35Z https://community.usa.canon.com/t5/Scanners/scanner-canoscan-LIDE-500f-twain-driver-disappeared/m-p/345132#M1111 <P>I don't use my scanner often (Windows 7 Pro, so supported), but tried to use it the other day and it says the twain driver is missing.</P><P>&nbsp;</P><P>Tried reloading software/drivers (current) and the twain driver.&nbsp; No help.&nbsp; I don't think the twain driver is reloading, it just runs and then is gone.</P><P>&nbsp;</P><P>I've tried the delete driver utility and reload, still no help.&nbsp;</P><P>&nbsp;</P><P>What else can I do?</P> Mon, 14 Jun 2021 23:00:35 GMT https://community.usa.canon.com/t5/Scanners/scanner-canoscan-LIDE-500f-twain-driver-disappeared/m-p/345132#M1111 rwernst 2021-06-14T23:00:35Z