A user is unable to connect to the company's wireless network after returning from vacation. The user claims to have entered the correct passphrase multiple times, but still receives an 'Unable to connect' error. What is the BEST action to take in order to resolve this issue?
Check the user's device for adequate signal strength from the wireless access point.
Verify the passphrase with the network administrator.
Connect the user's device to another wireless network to check general connectivity.
Replace the wireless adapter of the user's device assuming hardware failure.