License Borrowing

License borrowing can be used to check out a license from the license server machine to a client machine for a designated period of time. During this time, the client computer can disconnect from the license server machine and use that license. When the specified timeframe ends, the license will be returned to the license server machine and is no longer available on the client computer. Before users can take advantage of license borrowing, the site administrator needs to set up the borrowing environment (see below for instructions)

Requirements for license borrowing
1.There must be a keyword BORROW specified in the license file. You can check this by looking at the increment line for that license and seeing if there is a BORROW keyword included.
INCREMENT ane3fl ansyslmd 9999.9999 12-jan-2011 10 0E0E37E05A3C
VENDOR_STRING=customer:0000000 SUPERSEDE ISSUED=12-jan-2010
BORROW=720 START=12-jan-2010

2.You must have a network connection to the license server machine when you first borrow the license.


A single license can be borrowed for a maximum of 30 days. This will is defined in the license file interms of hours (BORROW=720 hours).

You cannot run both borrowed and non-borrowed licenses simultaneously. For example, if you borrow licenses but remain connected to a network from which you can use licenses, you will be able to use only the borrowed licenses. Likewise, if the machine on which you borrowed licenses is also a license server from which you could normally use licenses, you would be able to use only the borrowed licenses.

When a license is borrowed an entry is stored inside of the Windows registry. When the ANSYS application is run, it takes this license and validates it against the MAC (Network Card) address that was usde on the client machine that initially borrowed that license. If the MAC address changes the license will become invalid and will not run.

Borrowing a License

1. Connect to the network where the license server machine is running.
2. Launch the client license borrowing utility: Start> Programs> ANSYS 12.1> ANSYS Client Licensing> Client ANSLIC_ADMIN utility. Select Run the ANSYS Borrow Utility.
3. On the Borrow tab, specify the version number and return date. The return date defaults to the third day from the current date.
4. If you change any of the borrowing criteria, the product list will automatically update in five seconds. To update the list immediately, click the Update Delay (sec) button.
5. Select the product(s) you want to borrow. The product list includes add-on features or geometry interfaces. If you do not see a product listed that you think should be available, verify that you have selected the correct version.
6. Click Borrow.
7. Disconnect from the network. Note that even when you've disconnected from the network, you must still run the products from the same account you used to borrow the licenses. For example, if you use a network account to borrow the licenses, you cannot then run from a local account.
8. Be sure to verify that you can run the correct product with the borrowed licenses from your machine AFTER you've disconnected from the network. If you encounter any difficulties, reconnect to the network, return the license, and then re-borrow the correct license.


If you are unable to borrow the license, first check to see if you have borrowing enabled in the license file. If you do not please contact your ANSYS Account Manager and request this.

If you borrowed a license but are unable to run the application using that license, then this is probably an issue with the MAC address on the machine. When a license is borrowed, the license info and MAC address used to borrow that license is stored in the Windows registry. If the MAC address on the machine changes and you try to run the application the license check will be invalid. The MAC address can change if you switch from wireless to a wired NIC (Ethernet Card), or because you are using a VPN to connect into the server to borrow a license (VPNs often create a dummy MAC when they connect in).

Show Form
No comments yet. Be the first to add a comment!