az policy assignment show - error after upgrade to version 2.77 #32159

Describe the bug

az policy assignment show - errors are shwon after upgrade to version 2.77

az policy assignment show --name "ALZ-Policy-v1.0.0" --scope '/providers/Microsoft.Management/managementGroups/ALZ'
InvalidArgumentValue: -n: Invalid format: 'ALZ-Policy-v1.0.0' does not fully match regular expression pattern '^[^<>*%&:\?.+/]*[^<>*%&:\?.+/ ]+$'

Related command

az policy assignment show --name "ALZ-Policy-v1.0.0" --scope '/providers/Microsoft.Management/managementGroups/ALZ'

Errors

InvalidArgumentValue: -n: Invalid format: 'ALZ-Policy-v1.0.0' does not fully match regular expression pattern '^[^<>*%&:\?.+/]*[^<>*%&:\?.+/ ]+$'

Issue script & Debug output

az policy assignment show --name "ALZ-Policy-v1.0.0" --scope '/providers/Microsoft.Management/managementGroups/ALZ' --debug

cli.knack.cli: Command arguments: ['policy', 'assignment', 'show', '--name', 'ALZ-Policy-v1.0.0', '--scope', '/providers/Microsoft.Management/managementGroups/ALZ', '--debug']
cli.knack.cli: init debug log:
Enable color in terminal.
Enable VT mode.
cli.knack.cli: Event: Cli.PreExecute []
cli.knack.cli: Event: CommandParser.OnGlobalArgumentsCreate [<function CLILogging.on_global_arguments at 0x000001C75E6244A0>, <function OutputProducer.on_global_arguments at 0x000001C75EBB98A0>, <function CLIQuery.on_global_arguments at 0x000001C75EC0B7E0>]
cli.knack.cli: Event: CommandInvoker.OnPreCommandTableCreate []
cli.azure.cli.core: Modules found from index for 'policy': ['azure.cli.command_modules.policyinsights', 'azure.cli.command_modules.resource']
cli.azure.cli.core: Loading command modules:
cli.azure.cli.core: Name Load Time Groups Commands
cli.azure.cli.core: policyinsights 0.478 9 17
cli.azure.cli.core: resource 0.100 52 234
cli.azure.cli.core: Total (2) 0.578 61 251
cli.azure.cli.core: These extensions are not installed and will be skipped: ['azext_ai_examples', 'azext_next']
cli.azure.cli.core: Loading extensions:
cli.azure.cli.core: Name Load Time Groups Commands Directory
cli.azure.cli.core: Total (0) 0.000 0 0
cli.azure.cli.core: Loaded 60 groups, 251 commands.
cli.azure.cli.core: Found a match in the command table.
cli.azure.cli.core: Raw command : policy assignment show
cli.azure.cli.core: Command table: policy assignment show
cli.knack.cli: Event: CommandInvoker.OnPreCommandTableTruncate [<function AzCliLogging.init_command_file_logging at 0x000001C760B7D080>]
cli.azure.cli.core.azlogging: metadata file logging enabled - writing logs to 'C:\Users\twiktorowicz.azure\commands\2025-09-23.11-41-46.policy_assignment_show.18276.log'.
az_command_data_logger: command args: policy assignment show --name {} --scope {} --debug
cli.knack.cli: Event: CommandInvoker.OnPreArgumentLoad [<function register_global_subscription_argument..add_subscription_parameter at 0x000001C7613C25C0>]
cli.knack.cli: Event: CommandInvoker.OnPostArgumentLoad []
cli.knack.cli: Event: CommandInvoker.OnPostCommandTableCreate [<function register_ids_argument..add_ids_arguments at 0x000001C7614F4900>, <function register_cache_arguments..add_cache_arguments at 0x000001C7614F4AE0>, <function register_upcoming_breaking_change_info..update_breaking_change_info at 0x000001C7614F4B80>]
cli.knack.cli: Event: CommandInvoker.OnCommandTableLoaded []
cli.knack.cli: Event: CommandInvoker.OnPreParseArgs []
cli.knack.cli: Event: CommandInvoker.OnPostParseArgs [<function OutputProducer.handle_output_argument at 0x000001C75EBB9940>, <function CLIQuery.handle_query_parameter at 0x000001C75EC0B880>, <function register_ids_argument..parse_ids_arguments at 0x000001C7614F49A0>]
cli.azure.cli.core.azclierror: Traceback (most recent call last):
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/aaz/_command_ctx.py", line 53, in format_args
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/aaz/_arg_fmt.py", line 402, in call
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/aaz/_arg_fmt.py", line 399, in call
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/aaz/_arg_fmt.py", line 56, in call
azure.cli.core.aaz.exceptions.AAZInvalidArgValueError: InvalidArgumentValue: -n: Invalid format: 'ALZ-Policy-v1.0.0' does not fully match regular expression pattern '^[^<>*%&:\?.+/]*[^<>*%&:\?.+/ ]+$'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\knack/cli.py", line 233, in invoke
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/init.py", line 666, in execute
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/init.py", line 734, in _run_jobs_serially
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/init.py", line 703, in _run_job
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/aaz/_command.py", line 155, in call
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/command_modules/resource/aaz/latest/policy/assignment/_show.py", line 34, in _handler
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/aaz/_command.py", line 165, in _handler
File "D:\a_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/aaz/_command_ctx.py", line 55, in format_args
azure.cli.core.azclierror.InvalidArgumentValueError: InvalidArgumentValue: -n: Invalid format: 'ALZ-Policy-v1.0.0' does not fully match regular expression pattern '^[^<>*%&:\?.+/]*[^<>*%&:\?.+/ ]+$'

cli.azure.cli.core.azclierror: InvalidArgumentValue: -n: Invalid format: 'ALZ-Policy-v1.0.0' does not fully match regular expression pattern '^[^<>*%&:\?.+/][^<>*%&:\?.+/ ]+$'
az_command_data_logger: InvalidArgumentValue: -n: Invalid format: 'ALZ-Policy-v1.0.0' does not fully match regular expression pattern '^[^<>*%&:\?.+/][^<>*%&:\?.+/ ]+$'
cli.knack.cli: Event: Cli.PostExecute [<function AzCliLogging.deinit_cmd_metadata_logging at 0x000001C760B7D300>]
az_command_data_logger: exit code: 1
cli.main: Command ran in 1.179 seconds (init: 0.372, invoke: 0.807)
telemetry.main: Begin splitting cli events and extra events, total events: 1
telemetry.client: Accumulated 0 events. Flush the clients.
telemetry.main: Finish splitting cli events and extra events, cli events: 1
telemetry.save: Save telemetry record of length 3948 in cache file under C:\Users\twiktorowicz.azure\telemetry\20250923114146706
telemetry.main: Begin creating telemetry upload process.
telemetry.process: Creating upload process: "C:\Program Files\Microsoft SDKs\Azure\CLI2\python.exe C:\Program Files\Microsoft SDKs\Azure\CLI2\Lib\site-packages\azure\cli\telemetry_init_.pyc C:\Users\twiktorowicz.azure C:\Users\twiktorowicz.azure\telemetry\20250923114146706"
telemetry.process: Return from creating process 29212
telemetry.main: Finish creating telemetry upload process.

Expected behavior

It should just show policy assignment with a given name.
It was working before using version 2.76

Environment Summary

azure-cli 2.77.0

core 2.77.0
telemetry 1.1.0

Extensions:
application-insights 1.2.3
azure-devops 1.0.2
connectedmachine 2.0.0b1
log-analytics 1.0.0b1
monitor-control-service 1.2.0
portal Unknown
resource-graph Unknown
scheduled-query 1.0.0b1
stack-hci 1.1.0
stack-hci-vm 1.10.4

Dependencies:
msal 1.34.0b1
azure-mgmt-resource 23.3.0

Python location 'C:\Program Files\Microsoft SDKs\Azure\CLI2\python.exe'
Config directory 'C:\Users\twiktorowicz.azure'
Extensions directory 'C:\Users\twiktorowicz.azure\cliextensions'

Python (Windows) 3.13.7 (tags/v3.13.7:bcee1c3, Aug 14 2025, 14:15:11) [MSC v.1944 64 bit (AMD64)]

Legal docs and information: aka.ms/AzureCliLegal

Your CLI is up-to-date.

Additional context

It was tested locally on Windows 11 laptop, but the same errors are showing when using MS Hosted agents in Azure DevOps pipelines executed on ubuntu-latest image.