In general, it is only possible to make a connection to a device
- if the TeamViewer ID and the associated password is known or
- if the access is confirmed via Easy Access or
- the connection partner confirmed the access manually.
If non of the above points is given, it is not possible to access a device.
Depending on where you want to restrict access - locally or on the remote device - please make sure to make the setting on your TeamViewer of the remote device (locally or during a remote session)
⚠Important: Do not share your ID and password with a person you do not know or trust.
You can also restrict access to your computer in different ways. Depending on how you want to restrict access and to what extent, choose one of the following options:
Restrict access via Block and Allowlist
You can restrict access to specific devices or persons via the Block and Allowlist.
The Blocklist allows you to deny incoming connections for specific TeamViewer IDs or accounts.
The Allowlist enables you to define specific TeamViewer IDs or accounts that are exclusively allowed for connections.
💡Hint: Everyone not being on the allowlist is automatically denied to connect.
Find a detailed description of how to setup the Block and Allowlist and more information here:
Restrict Access Control for incoming connections
You can restrict access control for incoming connections via the Advanced TeamViewer Settings under Extras --> Options --> Advanced --> Advanced Settings for connections to this computer --> Access Control
Choose between Full access, Confirm all, View and Show, Custom Settings or deny any incoming remote control connection.
Restrict Access Control for outgoing connections
You can restrict access control for outgoing connections via the Advanced TeamViewer Settings under Extras --> Options --> Advanced --> Advanced Settings for connections to other computers --> Access Control
Choose between Full access, Confirm all, View and Show, Custom Settings or deny any outgoing remote control connection.
Deny connections from outside your network
Another option is to deny connections from outside your network. With this you are only allowing incoming LAN connections.
With Conditional Access, you can enforce Remote Access Rights to prevent unauthorized activities and align with security policies
Control TeamViewer usage and access rights throughout your organization using a rules engine you configure within the Management Console. This conditional access provides an additional layer of security for your corporate network.
TeamViewer customers with a TeamViewer Enterprise/Tensor license and Conditional Access AddOn can use the Conditional access feature. Read more here:
Completely prevent any access
To completely prevent any access with ID and password, exit TeamViewer in the taskbar.
Any incoming or outgoing connections are no longer possible.