VPN
I can’t use the VPN because Windows Hello is active
Target Audience: Iscte Community
Description: Authentication or certificate issues after logging in with PIN/biometrics.
Probable Cause:
- Conflict between Windows Hello and certificate-based authentication
Answer/Solution:
- Follow the specific instructions from Iscte IT for this error
- Repeat the installation as indicated
Further Information:
- Click here
The VPN does not work on computers with ARM processors
Target Audience: Iscte Community
Description: The installation occurs, but the connection fails.
Probable Cause:
- Client compatibility limitations
- Incorrect version of GlobalProtect
Answer/Solution:
- Download and install the following file: GlobalProtectARM64-6.3.3.1-634.msi
- Follow the specific instructions for ARM
- Contact IT Support if it persists
Further Information:
- Click here
I can’t use the VPN on a Mac with an old version of MacOS
Target Audience: Iscte Community
Description: Installation errors or extension blocking.
Probable Cause:
- Too old mMcOS
- Manual blocking of extensions by Palo Alto Networks
Answer/Solution:
- Manually authorize the extension in Security & Privacy
- Consult the specific instructions from Iscte IT
- Update macOS, if possible
Further Information:
- Click here
The VPN does not work after the operating system update
Target Audience: Iscte Community
Description: The VPN was working before and stopped working.
Probable Cause:
- Temporary incompatibility after update
- Outdated GlobalProtect client
Answer/Solution:
- Restart the computer
- Update or reinstall GlobalProtect
- Check specific instructions on the Iscte website
Further Information:
- Click here
I can’t install the VPN on my computer
Target Audience: Iscte Community
Description: Error during the installation of GlobalProtect.
Probable Cause:
- Lack of administrator permissions
- Outdated operating system
- Incompatible version (e.g., old macOS)
Answer/Solution:
- Use an account with administrator privileges
- Update the operating system
- Follow the instructions on the Iscte IT website exactly
Further Information:
- Click here
The VPN works, but the internet connection becomes very slow
Target Audience: Iscte Community
Description: Very slow browsing with VPN on.
Probable Cause:
- All traffic passing through the ISCTE network
- Slow home connection
- VPN connected unnecessarily
Answer/Solution:
- Use the VPN only for necessary services
- Disconnect the VPN when not in use
- Avoid heavy downloads with the VPN on
Further Information:
- Click here
A VPN does not work on public networks (hotels, airports, companies)
Target Audience: Iscte Community
Description: The VPN does not connect when used outside of home.
Probable Cause:
- Network or port blocks on restrictive networks
- Corporate firewalls
Answer/Solution:
- Test another network
- Use mobile data as a temporary alternative
- If recurrent, report to Iscte IT
Further Information:
- Click here
I get the error ‘Connection failed’ when trying to connect to the VPN
Atualizado/Updated: 2026-05-13
Target Audience: Iscte Community
Description: The connection fails with a generic error message.
Probable Cause:
- Pending or misconfigured MFA
- Incorrect credentials
- Temporary account lock
Response/Solution:
- Test login at https://login.iscte-iul.pt
- Confirm if the password is correct
- Wait a few minutes and try again
- Contact Support if the error persists
Further Information:
- Click here
The GlobalProtect client connects but I do not have access to Iscte services
Target Audience: Iscte Community
Description: The status is “Connected,” but internal resources are not working.
Probable Cause:
- Access profile not assigned to the user
- Service not available via VPN
- VPN session with logical error
Answer/Solution:
- Disconnect and reconnect the VPN
- Confirm if the service requires VPN
- Contact Support to validate permissions
Further Information:
- Click here
The VPN stays on “Connecting” indefinitely
Target Audience: Iscte Community
Description: The GlobalProtect client tries to connect but does not establish a connection.
Probable Cause:
- Unstable internet connection
- Firewall or antivirus blocking the application
- Simultaneous use of another (commercial) VPN
Answer/Solution:
- Restart the GlobalProtect client
- Turn off any active commercial VPN
- Test another network, if possible
- Restart the computer
Further Information:
- Click here
I can’t connect to the VPN because the MFA authentication doesn’t appear
Atualizado/Updated: 2026-05-13
Target Audience: Iscte Community
Description: After entering the credentials, the authentication process does not progress or an MFA request does not appear.
Probable Cause:
- MFA is not configured
- Mobile phone has no connectivity
- MFA method is not available
Answer/Solution:
- Confirm that MFA is correctly configured on the Iscte account.
- Check internet connection on the MFA device.
- If it is not possible to use the MFA app, contact Iscte IT.
Further Information:
- Click here
Is a VPN required to access scientific databases?
Atualizado/Updated: 2026-05-12
Target Audience: Iscte Community
Answer/Solution:
It depends on the database. Some platforms check access through the institutional IP address, making a VPN necessary when you are off-campus. Others allow direct authentication with institutional credentials without the need for a VPN.
Further Information:
- Click here
Does a VPN record my activity?
Atualizado/Updated: 2026-05-12
Target Audience: Iscte Community
Answer/Solution:
A VPN may record technical information related to the security and operation of the service, such as connection times and accesses to institutional resources. These records are used solely for management, security, and compliance with Iscte policies and applicable law.
Further Information:
- Click here
What should I do if the VPN does not connect?
Atualizado/Updated: 2026-05-12
Target Audience: Iscte Community
Answer/Solution:
If you have difficulties connecting to the VPN, try:
- Confirming if you have an internet connection.
- Checking if the credentials are correct.
- Restarting the GlobalProtect client.
- Updating the software to the latest version.
If the problem persists, you should contact Iscte’s IT support services.
Further Information:
- Click here
Can I use the VPN on multiple devices?
Atualizado/Updated: 2026-05-12
Target Audience: Iscte Community
Answer/Solution:
As a rule, yes. However, there may be a limit to the number of simultaneous connections per user. If you try to connect on multiple devices at the same time and encounter problems, it may be necessary to disconnect an active session.
Further Information:
- Click here
Does a VPN make the Internet slower?
Atualizado/Updated: 2026-05-12
Target Audience: Iscte Community
Answer/Solution:
There may be some reduction in speed, as traffic goes through additional security and encryption mechanisms. The slowdown may be more noticeable if:
- The internet connection is weak.
- Many users are connected to the VPN at the same time.
- Large volumes of data are being transferred.
Further Information:
- Click here
Should a VPN always be on?
Atualizado/Updated: 2026-05-12
Target Audience: Iscte Community
Answer/Solution:
- It is not advisable to keep the VPN permanently on.
- You should activate it only when you need to access Iscte internal resources.
- When it is no longer necessary, you should turn it off to avoid slow internet connection and possible conflicts with other services.
Further Information:
- Click here
Which operating systems does a VPN work on?
Atualizado/Updated: 2026-05-12
Target Audience: Iscte Community
Answer/Solution:
GlobalProtect is compatible with the main operating systems and devices:
- Windows
- MacOS
- Linux
- iOS (iPhone/iPad) – to be implemented at Iscte
- Android – to be implemented at Iscte
It is important to ensure that you have the latest version of the client installed to avoid compatibility issues.
Further Information:
- Click here