You will need to change the password for the BBPortalWebUser account in SQL Management Studio, and make sure that the password is not set to expire.
Please contact the appropriate software vendor or IT professional for assistance with this process or issue, which is beyond Blackbaud's scope of support.

Once the password is reset, please update the web.config file in the NetCommunity directory with the new password.

Once the web.config file is updated, please restart IIS.