D-link 3226s switch password not accepting . Is their manual switch to reset it.

Reset the D-Link to default settings. Repeat the process.

I think you will have to reset it via the rs232 console port connection mode via a console emulator on the p.c.
It is similar thing in cisco equipment this link explains the type of process to do this
http://www.dlink.cc/d-link-switch/how-to-the-reset-the-password-on-d-link-des-3526.html
I think if you search for
DES-3226S resetting password via console port
in a search engine you might find a more specific link to a method.
https://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&source=web&cd=8&cad=rja&uact=8&ved=0ahUKEwjE6cSvzeXVAhVBC8AKHUqrAIsQFghMMAc&url=ftp%3A%2F%2Fftp.dlink.de%2Fdes%2Fdes-3226s%2Fdocumentation%2FDES-3226S_man_en_revALL_CLI-Reference_ALL_051213.pdf&usg=AFQjCNGsRXh5AzlIVEWQY5P2HUX8OF-6Dg
https://www.youtube.com/watch?v=ADp6DolzW-Q
https://networkengineering.stackexchange.com/questions/5476/how-to-factory-reset-the-d-link-dgs3224tgr-switch

To reset the password:

Turn unit on and wait for password prompt
Depress the and hold the enter button until camera switches into 5-digit password mode _ _ _ _ _.

Trail sentry systems will not indicate 5-digit mode on the screen, but will indicate _ _ _ _ instead of HHHH .

Press enter to confirm 5 digit mode

Enter 5-digit code 66214 and press enter button( trail sentry cameras will accept a 5th Digit after the 4th digit is entered in the _ _ _ _ screen.

Camera will now go into operating mode, and user can now program a new password from the setup mode.

Follow this link to see the user manual PDF:

http://www.bushnell.com/manuals/trail-scout/119000TrailSentry_manual.pdf

Go here->link.

The Switch's factory default IP address is 10.90.90.90
with a subnet mask of 255.0.0.0 and a default gateway of 0.0.0.0.
Often set up by rs232 connection

See
ftp://files.dlink.com.au/products/DES-3226S/QuickInstallGuide/Generic_QIG_for_Managed_Switches_v1.03.pdf

and
http://support.dlink.com.au/Default.asp

a user manual is available here http://support.digidave.co.uk/index.php?_a=downloads&_m=get&_i=5 there is a reset button on the back - reset to factory settings to get back to the default username and password
see page 15 of the user manual - link above

To reset the password:

Turn unit on and wait for password prompt
Depress the and hold the enter button until camera switches into 5-digit password mode _ _ _ _ _.

Trail sentry systems will not indicate 5-digit mode on the screen, but will indicate _ _ _ _ instead of HHHH .

Press enter to confirm 5 digit mode

Enter 5-digit code 66214 and press enter button( trail sentry cameras will accept a 5th Digit after the 4th digit is entered in the _ _ _ _ screen.

Camera will now go into operating mode, and user can now program a new password from the setup mode.

Follow this link to see the user manual PDF:

http://www.bushnell.com/manuals/trail-scout/119000TrailSentry_manual.pdf

To reset the password:

Turn unit on and wait for password prompt
Depress the and hold the enter button until camera switches into 5-digit password mode _ _ _ _ _.

Trail sentry systems will not indicate 5-digit mode on the screen, but will indicate _ _ _ _ instead of HHHH .

Press enter to confirm 5 digit mode

Enter 5-digit code 66214 and press enter button( trail sentry cameras will accept a 5th Digit after the 4th digit is entered in the _ _ _ _ screen.

Camera will now go into operating mode, and user can now program a new password from the setup mode.

Follow this link to see the user manual PDF:

http://www.bushnell.com/manuals/trail-scout/119000TrailSentry_manual.pdf

I cant put a passcode

make it reset the password, that you can open the system..

if thin bios or admin password reset it all