Error: Update Sites Could Not Be Found
Unable to Check for Updates in Eclipse 2020-12
Problem Statement
When attempting to check for updates in Eclipse 2020-12, some users may encounter the following error: "Some sites could not be found. See the error log for more detail."
Possible Causes
This error can occur for several reasons, including: * Network connectivity issues * Firewall settings blocking access to update sites * Incorrect configuration of Eclipse's update site settings
Proposed Solution
To resolve this issue, try the following steps: 1. Verify that your computer has an active internet connection. 2. Check your firewall settings to ensure that update sites are not being blocked. 3. Reset Eclipse's update site settings by navigating to "Help" > "Check for Updates" > "Manage Configuration" and clicking the "Restore Defaults" button. 4. Manually add trusted update sites by selecting "Add Site" and providing the URL of the update site. If Rolf Theunissen's suggestion regarding firewall settings does not resolve the issue, verify the Java Development Kit (JDK) or Java Runtime Environment (JRE) used by Eclipse. To check the JDK/JRE settings: 1. Go to "Window" > "Preferences" > "Java" > "Installed JREs". 2. Ensure that the correct JDK/JRE is selected and its location is valid.
Additional Information
If the above steps do not solve the problem, consult the Eclipse documentation or contact a qualified Eclipse support professional for further assistance.
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