Due to the upcoming renewal of the TÜBİTAK Public Certification Center (KamuSM) license, the DSClient e-signature application used for electronic signature processes in EBYS must be updated with the new license file by June 18, 2025. To ensure uninterrupted use of electronic signatures in EBYS, all users performing e-signing operations must download the latest DSClient license file from https://portal.synergynow.io/#/_redirect/o734pzRk39fNLAE7A0Nzsp and replace the existing license file as per the instructions for their respective operating system (details provided below). Failure to update will result in the DSClient e-signature application ceasing to function. Mobile signature users do not need to make any changes.

Windows users:

• DSClient service should be stopped from the Windows Task Manager > Services screen; if Java appears to be running in the Windows Task Manager > Processes screen, it should also be terminated.
• After downloading the updated license file from the link mentioned above to the computer, it should be placed in the C:\Program Files\DSClient\lisans directory with the name "licence.xml". Then, the DSClient service should be restarted.
• Computer should be restarted.
• The https://ebys.metu.edu.tr page can be reloaded and used on the browser.
• If needed, you can revisit the DSClient installation information for Windows on the https://faq.cc.metu.edu.tr/faq/how-can-i-use-e-signatures-ebys-windows-s... page and JAVA installation information on the https://faq.cc.metu.edu.tr/faq/how-can-i-use-e-signatures-ebys-windows-s... page.

MacOS users:

• After downloading the updated license file from the link mentioned above to the computer, it should be copied to the /Downloads directory with the name "licence.xml".

• Open the terminal screen and perform the file change operation with the following commands:

sudo cp Downloads/licence.xml /usr/local/bin/SetupFiles/lisans
sudo launchctl stop com.dsclient.bms
sudo launchctl start com.dsclient.bms

• The https://ebys.metu.edu.tr page can be reloaded and used on the browser.
• If needed, you can revisit the DSClient installation information for MacOS on the https://faq.cc.metu.edu.tr/faq/how-can-i-use-e-signatures-ebys-macos-ste... page and JAVA installation information on the https://faq.cc.metu.edu.tr/faq/how-can-i-use-e-signatures-ebys-macos-ste... page.

Linux-Ubuntu users:

• The updated license file is downloaded from the link mentioned above (if it is downloaded to a different directory, it should be copied to the Downloads directory under the home directory with the name "licence.xml").
• Open the terminal screen and perform the file change operation with the following commands and restart the DSClient service.

sudo cp ~/Downloads/licence.xml /opt/SetupFiles/lisans/
sudo systemctl restart dsclientservice.service

• The https://ebys.metu.edu.tr page can be reloaded and used on the browser.
• If needed, you can revisit the DSClient and JAVA installation information for Linux-Ubuntu on the https://faq.cc.metu.edu.tr/faq/how-can-i-use-e-signatures-ebys-linux page.

Linux-Debian users:

• The updated license file is downloaded from the link mentioned above (if it is downloaded to a different directory, it should be copied to the Downloads directory under the home directory with the name "licence.xml").
• Open the terminal screen and perform the file change operation with the following command and restart the computer.

sudo cp ~/Downloads/licence.xml /opt/SetupFiles/lisans/
sudo systemctl restart dsclientservice.service

• The https://ebys.metu.edu.tr page can be reloaded and used on the browser.
• If needed, you can revisit the DSClient and JAVA installation information for Linux-Debian on the https://faq.cc.metu.edu.tr/faq/how-can-i-use-e-signatures-ebys-linux page.
  

If you experience any problems with using e-signature in EBYS despite following the steps described above, or if you have different questions about e-signature, you can check the frequently asked questions at https://faq.cc.metu.edu.tr/groups/e-signature.
You can send your questions about EBYS to ebys-destek@metu.edu.tr .