[JENKINS-49986] Pipeline 'bat' hangs on ws with forward slash path separator

After upgrading Jenkins LTS (from 2.89.2 to 2.89.4) and several plugins yesterday we have an issue with hanging "bat" commands on windows nodes.

The following pipeline illustrates the issue:

node() {

    ws('D:\\') {

bat 'echo Hello 1'

    }


    ws('D:/') {

bat 'echo Hello 2'

    }

}

The output is:

Running in Durability level: MAX_SURVIVABILITY

[Pipeline] node

Running on XXX in C:\Jenkins\workspace\YYY

[Pipeline] {

[Pipeline] ws

Running in D:\src

[Pipeline] {

[Pipeline] bat

[src] Running batch script

D:\src>echo Hello 1

Hello 1

[Pipeline] }

[Pipeline] // ws

[Pipeline] ws

Running in D:/src

[Pipeline] {

[Pipeline] bat

[D:/src] Running batch script

D:\src>echo Hello 2

Hello 2

And the pipeline hangs here / does not finish ever.

So it looks like setting a workspace with a path containing a forward slash does not work anymore with bat commands.

I also tried the powershell command and that works without issues.

 

---
Originally reported by wouterslob, imported from: Pipeline 'bat' hangs on ws with forward slash path separator

• status: Open
  
• priority: Major
  
• component(s): durable-task-plugin
  
• resolution: Unresolved
  
• votes: 1
  
• watchers: 2
  
• imported: 2025-12-09
  

Raw content of original issue

After upgrading Jenkins LTS (from 2.89.2 to 2.89.4) and several plugins yesterday we have an issue with hanging "bat" commands on windows nodes.


The following pipeline illustrates the issue:



node() {

    ws('D:\\') {

        bat 'echo Hello 1'

    }


    ws('D:/') {

        bat 'echo Hello 2'

    }

}





The output is:

Running in Durability level: MAX_SURVIVABILITY

 [Pipeline] node

 Running on XXX in C:\Jenkins\workspace\YYY

 [Pipeline] {

 [Pipeline] ws

 Running in D:\src

 [Pipeline] {

 [Pipeline] bat

 [src] Running batch script


D:\src>echo Hello 1 

 Hello 1

 [Pipeline] }

 [Pipeline] // ws

 [Pipeline] ws

 Running in D:/src

 [Pipeline] {

 [Pipeline] bat

 [D:/src] Running batch script


D:\src>echo Hello 2 

 Hello 2

And the pipeline hangs here / does not finish ever.


So it looks like setting a workspace with a path containing a forward slash does not work anymore with bat commands.


I also tried the powershell command and that works without issues.