Unable to activate JetBrains IDE via account.jetbrains.com. No generated token after pasting the url to browser by following the instruction. – Support | JetBrains

Problem

Unable to activate any of the JetBrains IDEs.
No token is generated even after pasting the URL to the browser by following the instructions.
"java.net.UnknownHostException: account.jetbrains.com" is thrown in idea.log file.

2024-08-13 13:38:26,822 [ 112330]   WARN - #c.i.i.z.J.r - Unable to load OAuth provider icon: https://account.jetbrains.com/static/images/oauth2/ide/github_dark.svg
java.net.UnknownHostException: account.jetbrains.com
	at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:567)
	at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
	at java.base/java.net.Socket.connect(Socket.java:751)
	at java.base/sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:304)
	at java.base/sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:181)
	at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:183)
	at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:531)
	at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:636)
	at java.base/sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
	at java.base/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:377)
	at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:193)
	at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1237)
	at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1123)
	at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:179)
	at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1675)
	at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1599)
	at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:223)
	at java.base/java.net.URL.openStream(URL.java:1325)
	at com.intellij.util.SVGLoader.load(SVGLoader.kt:42)
	at com.intellij.ide.z.J.r.c(r.java:550)
	at com.intellij.ide.z.J.r.c(r.java:526)
	at com.intellij.util.containers.ContainerUtil.map(ContainerUtil.java:1995)
	at com.intellij.ide.z.J.r.c(r.java:526)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:646)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
	at com.intellij.util.concurrency.ContextRunnable.run(ContextRunnable.java:27)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:735)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:732)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:732)
	at java.base/java.lang.Thread.run(Thread.java:1583)

Unable to log into https://account.jetbrains.com via browser.
Log into https://account.jetbrains.com.cn via browser works fine.

Solution

Check the hosts file and remove the jetbrains.com domain-related settings and restart the PC.