The most common causes are a changed WiFi password, an old saved network profile, or a security setting the device doesn't support. Forget the network and reconnect with the current password. If only older devices fail, the router's security mode may be the issue.
Common causes
WiFi password changed
Devices keep trying the old saved password and fail without clearly saying why.
Corrupted saved network profile
A saved profile from an earlier configuration can keep failing even with the right password.
Security mode not supported
Older laptops, scanners, and printers may not support WPA3-only networks.
MAC filtering or device limits
Some routers only allow approved devices or limit how many can connect.
Weak signal at the edge of coverage
Devices can see a network but fail to complete the connection when the signal is too weak.
How to fix it, step by step
- 1
Forget the network
Remove the saved network from the device, then reconnect and type the current password carefully.
- 2
Move closer to the access point
Try connecting near the router or access point to rule out weak signal.
- 3
Restart the device and the router
Restarting clears stuck connections on both ends.
- 4
Check the router's security mode
If older devices can't connect, use WPA2/WPA3 mixed mode instead of WPA3 only.
- 5
Check MAC filtering or access controls
Make sure the device isn't blocked or over a connection limit in the router settings.
- 6
Update the WiFi driver
On Windows, install the latest WiFi driver from the device manufacturer.
When to call a technician
Call us if several devices can't connect, if you don't have access to the router's admin settings, or if you need a guest network that keeps visitors separate from office computers.
On-site support across Orange County · see our business networking and WiFi installation services.
Frequently asked questions
Why does my phone say incorrect password when it's right?
Often because the phone is using an old saved profile, or the router's security mode isn't compatible. Forget the network and reconnect.
Why can't my printer connect to the new WiFi?
Many printers don't support WPA3 or 5 GHz-only networks. A 2.4 GHz network with WPA2 usually solves it.
How often should we change the office WiFi password?
Change it when employees leave or if it has been shared widely. A separate guest network means visitors never need the main password.