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Suddenly I was not able to check for Eclipse updates and every connection to an online repository was failing do to the following error, visibile in ECLIPSE_WORKSPACE/.metadata/.log

    !ENTRY org.eclipse.equinox.p2.metadata.repository 4 0 2020-05-15 09:58:58.981
    !MESSAGE Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.compositeRepository
    !STACK 0
    java.lang.LinkageError: loader constraint violation: loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @59ec6f70 wants to load interface org.apache.http.client.CredentialsProvider. A different interface with the same name was previously loaded by org.eclipse.osgi.internal.loader.EquinoxClassLoader @58c5820f. (org.apache.http.client.CredentialsProvider is in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @58c5820f, parent loader 'platform')
Dariopnc
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1 Answers1

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I found out that running Eclipse in clean mode was the key to solve this issue: here's there more info about using that mode.

Dariopnc
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