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Question

SB8200 not accepting password

T
The Many
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New to me SB8200 which replaced my CM8200A. Last night I got into the modem with the 8 digit serial number. After getting in, it asked to reset the password. Did that and copied the password to a file in case I need it. Was working fine. This morning I tried to get in with the new password and it failed to do so. Tried the 8 digits SN and it failed. Tried the “password” and it failed.

 

I doubt this is normal because I haven’t seem much info here on failed passwords. By the way, I am using “admin” as the log in.

 

Thoughts from the experts here? Appreciate it. Thanks

2 replies

T
The Many
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  • TheBaruThe Many
  • Author
  • The Many
  • 4 replies
  • July 12, 2025
TheBaru wrote:

New to me SB8200 which replaced my CM8200A. Last night I got into the modem with the 8 digit serial number. After getting in, it asked to reset the password. Did that and copied the password to a file in case I need it. Was working fine. This morning I tried to get in with the new password and it failed to do so. Tried the 8 digits SN and it failed. Tried the “password” and it failed.

 

I doubt this is normal because I haven’t seem much info here on failed passwords. By the way, I am using “admin” as the log in.

 

Thoughts from the experts here? Appreciate it. Thanks

Update - After performing a long reset, >20 seconds, I was able to get back in with the 8 digit SN. However, when I did a regular reset (wait for the lights to flash) I couldn’t get in. This is weird for me.

Sorry to bother the group. Thanks

S
Wi-Fi Warriors
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To reset the SB8200 modem effectively, press and hold the reset button for 10–15 seconds.

If you ever face an issue where you're unable to log in to the modem interface, try this workaround:

  1. Disconnect the coaxial cable from the modem.
  2. Restart the modem.
  3. Without reconnecting the coaxial cable, connect a computer directly to the modem using an Ethernet cable.
  4. Then, try accessing the login page again.
SURFboard Community Moderator Team

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