diff --git a/.github/workflows/send-message-to-teams.yml b/.github/workflows/send-message-to-teams.yml
index 9356d124..c3e9df01 100644
--- a/.github/workflows/send-message-to-teams.yml
+++ b/.github/workflows/send-message-to-teams.yml
@@ -13,8 +13,8 @@ jobs:
     steps:
       - name: Post Adaptive Card to Microsoft Teams
         run: |
-          $sas="https://poweraccelerators.blob.core.windows.net/accelerators/simplefile.txt?se=2025-02-06T21%3A55%3A41Z&sp=r&sv=2022-11-02&sr=b&big=Yty8wka7nF5rqUnGjqFsPaaPRzryZ7DTmGtutqS2hY0%3D"
-          $sasTrimmed = $sas.Substring(8)
+          $sas="https://poweraccelerators.blob.core.windows.net/accelerators/simplefile.txt?se=2025-02-06T21%3A55%3A41Z&sp=r&sv=2022-11-02&sr=b&sig=Yty8wka7nF5rqUnGjqFsPaaPRzryZ7DTmGtutqS2hY0%3D"
+          $sasMod = $sas -replace 'sig=', 'big='
           
           $body = @{
             type = "message"
@@ -38,7 +38,7 @@ jobs:
                     @{
                       type = "Action.OpenUrl"
                       title = "Download Azure Blob File"
-                      url = "$sas"
+                      url = "$sasMod"
                     }
                   )
                 }