the fix for windows will be in 1.44.2, can you test the build from master ? 

I dont have setup to build the branch. Do you know when 1.44.2 will be released? If it is at later point, I will try to build from master

Our master branch has been failing due to some infra issues. If you don't mind you can test from one of my other PRs that reduces calls to describeInstances but contains the above fix
https://repo.jenkins-ci.org/incrementals/org/jenkins-ci/plugins/ec2/1.45-rc1008.3d3aaabf683e/

tapvir thoulen, was this released? I'm encountering it on version 1.46.1 as well.

gcimpoies can you provide a stacktrace if you have one?

raihaan sure, I've documented everything here: https://issues.jenkins-ci.org/browse/JENKINS-59682

Windows ec2 slave is not working. Getting below exception
I have given the permission to retrieve the password. Now, I'm not getting the above exception. But instance/slave node is getting terminated with the below exception
ERROR: Unable to decode password:
java.lang.IllegalArgumentException: Illegal base64 character d
com.amazonaws.AmazonClientException: Unable to decode password:
java.lang.IllegalArgumentException: Illegal base64 character d
at hudson.plugins.ec2.EC2PrivateKey.decryptWindowsPassword(EC2PrivateKey.java:141)
at hudson.plugins.ec2.win.EC2WindowsLauncher.connectToWinRM(EC2WindowsLauncher.java:156)
at hudson.plugins.ec2.win.EC2WindowsLauncher.launchScript(EC2WindowsLauncher.java:39)
at hudson.plugins.ec2.EC2ComputerLauncher.launch(EC2ComputerLauncher.java:48)
at hudson.slaves.SlaveComputer$1.call(SlaveComputer.java:294)
at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
at jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:71)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

I think it is related to newline characters returned in the PasswordData property from "getPasswordData" api call.
I tried to replicate on my local machine with standalone application. With newline characters, it is giving me below exception,
Exception in thread "main" org.bouncycastle.util.encoders.DecoderException: unable to decode base64 string: invalid characters encountered in base64 dataException in thread "main" org.bouncycastle.util.encoders.DecoderException: unable to decode base64 string: invalid characters encountered in base64 data at org.bouncycastle.util.encoders.Base64.decode(Unknown Source) at com.telushealth.thcp.pipeline.gradle.aws.ec2.AwsEC2GetPasswordTest.decryptWindowsPassword(AwsEC2GetPasswordTest.java:51) at com.telushealth.thcp.pipeline.gradle.aws.ec2.AwsEC2GetPasswordTest.main(AwsEC2GetPasswordTest.java:19)Caused by: java.io.IOException: invalid characters encountered in base64 data at org.bouncycastle.util.encoders.Base64Encoder.decode(Unknown Source) ... 3 more

get password data cannot return newlines according to RFC 4648. Are you setting the password on the AMI or leaving it random? Also can you open a new issue for this the issue is unrelated

I already created below ticket

1. JENKINS-59633