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Robocopy error 5 (access denied) and error 32 (sharing violation) need different fixes. Error 5 points to permissions or protected paths; error 32 means another process has the file open. Capture the exact code and path, then follow the matching branch instead of adding switches at random.
Start with the exact error, operation, and path
Robocopy can report a failure while copying files, deleting destination-only files, creating a directory, or reading security information. The same command may therefore show different errors for different paths. Save the complete output before changing anything:
robocopy C:Source D:Destination /E /LOG:C:Temprobocopy.logwrites a log without relying on the console buffer.robocopy C:Source D:Destination /E /TEE /LOG:C:Temprobocopy.logwrites the log and keeps the output visible in the console.
Record the numeric error, the operation Robocopy was attempting, and the full source or destination path. Error 5 and error 32 are not interchangeable. A Microsoft Q&A case, for example, reported error 32 while Robocopy was deleting extra destination files and error 5 while it accessed a protected destination directory. That report illustrates why each log line must be diagnosed on its own; it does not establish a universal cause for every computer.
Robocopy error codes that matter here
| Error | Meaning | What it usually requires |
|---|---|---|
| 5 | Access is denied. | Verify the account, path, ACLs, share permissions, and required privileges. For an authorized copy blocked by file or folder ACLs, consider backup mode. |
| 32 | ERROR_SHARING_VIOLATION: “The process cannot access the file because it is being used by another process.” |
Find the process holding the file, close or quiesce it safely, then retry. |
| 33 | A locked portion of a file caused a lock violation. | Treat it as a locking problem, but distinguish it from error 32 when reviewing logs. |
Error 32 is a Windows sharing violation, not proof that your Robocopy account lacks permission. Conversely, adding a backup-mode switch cannot release a file that an application has open.
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A quick decision matrix
| What the log shows | First question | Safe next action |
|---|---|---|
| Error 5 while reading or writing | Is the running account authorized for this path and operation? | Validate identity and ACLs; if an authorized backup is blocked by ACLs, test /ZB or /B. |
| Error 32 while copying | Which process currently has the file open? | Find the handle, then close or quiesce the owning workload through its supported procedure. |
| Error 32 while deleting | Is a process using the destination-only file? | Release the handle before retrying deletion; backup mode does not override an open-file conflict. |
| Error 33 | Is only part of the file locked? | Investigate the locking application and distinguish the condition from a general sharing violation. |
This classification prevents a common wasted step: changing permissions when a lock is the cause, or searching for a lock when the account simply lacks access.
Fix error 5: access denied
1. Confirm that the paths and identity are correct
- Check the source and destination in the command and in the log. A typo, mapped drive that exists only in an interactive session, or an unexpected redirected path can look like a permission failure.
- Confirm which Windows account and security context is running Robocopy. A scheduled task, service, elevated console, and ordinary desktop console may use different accounts.
- Test whether the account can browse the relevant directory and create a harmless test file in the destination. Do not change ACLs until you know the intended access model.
- For a network path, evaluate both layers: permissions on the shared folder and permissions on the underlying NTFS files and directories. The more restrictive effective result controls access.
Authentication to a server, server-side share policy, and third-party security software are environment-specific. If a local path works but a UNC path fails, investigate the remote account and share configuration rather than assuming a Robocopy switch will solve it.
Also note what Robocopy was doing when error 5 appeared. Reading source data, creating a destination directory, writing file data, deleting an item, and applying a security descriptor can require different rights. A command that can copy ordinary data may still fail when asked to set ownership or auditing information. The first failing path in the log is more useful than a later summary line because it identifies the operation that needs authorization.
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Robocopy’s /B switch runs a copy in backup mode and can override file and folder ACLs that would otherwise block access. /ZB starts in restartable mode and switches to backup mode if access is denied:
robocopy C:Source D:Destination /E /ZB /R:2 /W:5 /LOG:C:Temprobocopy.logUse these switches only when you are authorized to access the data and the account has the privilege needed for backup operations. They do not grant ownership, bypass organizational policy, authenticate you to a remote server, or make restricted data lawful to copy. If the account lacks the required privilege, the command can still fail with access denied.
Test the least invasive command first. Run the same source and destination with ordinary data copying and a small scope, then add /ZB only if the log shows an ACL-related failure and the migration owner has approved backup mode. /B is not a general “run as administrator” replacement and should not be used to conceal an incorrectly assigned account.
3. Keep security copying separate from ordinary data copying
The documented default /COPY:DAT copies data, attributes, and timestamps. Security and ownership require deliberate choices:
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| Option | What it changes | When to choose it |
|---|---|---|
/COPY:DAT |
Data, attributes, and timestamps. | Ordinary file migration where destination security is managed separately. |
/COPY:S |
Security descriptors. | Only when preserving ACLs is part of the migration and the operator can read and write them. |
/COPY:O |
Owner information. | Only when ownership must be retained and the account has the necessary rights. |
/COPY:U |
Auditing information. | Only when audit settings are an explicit requirement. |
/SEC |
Data plus security information. | When ACL preservation is required, instead of assuming it is needed for every copy. |
/COPYALL |
All supported file information, including security-related properties. | Use only for a fully specified migration; it increases privilege and compatibility requirements. |
Adding security options can create a new failure even after the data itself is readable. Decide whether the destination should inherit new permissions or reproduce the source security model before selecting one. In a mixed migration, it may be safer to copy data with /COPY:DAT and have the destination administrator apply the approved security model separately.
4. Check protected directories and destination state
Error 5 can occur when Robocopy reaches a protected destination directory, even though some files copied successfully. Review the log for the first failing directory and test access to that directory specifically. If the destination is managed by policy, ask its administrator to provide the intended write or security-management rights instead of weakening the ACL broadly.
Do not infer success from a partial transfer. A destination can contain many copied files while one protected subdirectory remains incomplete. Record the exact path, resolve that path’s authorization, and rerun a narrow test before repeating the whole tree.
Fix error 32: sharing violation
1. Understand what Windows is reporting
Error 32 means another process has the file open in a way that conflicts with the requested read, write, rename, or delete operation. Typical holders include an editor, media application, indexing component, antivirus scanner, backup agent, synchronization service, database engine, or a Windows service. The error does not identify the process by itself.
The conflict can be brief or persistent. A scanner may release a file after its current inspection, while a database or synchronization service may keep handles open as part of normal operation. Repeating the command without learning which case you have can either waste time or interrupt an active workload.
2. Locate the open-file reference
Microsoft Sysinternals Handle is designed to search for open file and directory references. Run it from an administrative console and search for the file or directory named in the Robocopy log. A result associates the path with a process and a handle, giving you a target for investigation.
Finding the process is safer than guessing which application to stop. If the path is a directory, search for the exact directory and then inspect processes with handles beneath it. If the file has been renamed or moved, repeat the search using its current path. Capture the process name and owning service before taking action so another administrator can verify the workload.
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3. Release the file through the owning application
- Ask the owner of the workload to close the document or stop the operation through its normal interface.
- For a service, use the service’s supported pause, backup, or maintenance procedure, then verify that the process has released the handle.
- For a database or other active data store, use the application’s supported backup or quiesce method. Copying a live database file can produce an unusable or inconsistent backup even if Robocopy eventually reads it.
- Retry the narrow Robocopy operation and check whether the same path fails.
Do not routinely force-close a handle. Handle documentation warns that closing a handle can destabilize the application or Windows, and it can leave an application with incomplete writes or corrupted state. Force closure is an exceptional recovery action for an administrator who understands the workload and accepts the risk, not a standard Robocopy fix.
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4. Treat application-specific guidance as an example, not a universal rule
Microsoft’s SQL Server error-32 guidance recommends identifying the process with Process Explorer or Handle. That is useful lock-diagnosis practice for SQL Server, but it does not mean every Robocopy error 32 originates in SQL Server or can be fixed by stopping a database service. Always identify the actual process on the affected machine.
Control retries so diagnosis finishes
Robocopy’s documented defaults are /R:1000000 (one million retries) and /W:30 (30 seconds between retries). An unfixable error can therefore keep running for an unexpectedly long time. Set explicit, bounded values while troubleshooting:
robocopy C:Source D:Destination /E /R:2 /W:5 /LOG:C:Temprobocopy-test.log/R:<n>sets the retry count./W:<n>sets the wait between retries in seconds./R:2 /W:5is a practical diagnostic example, not a Microsoft-mandated setting.
After the cause is fixed, choose retry values that match the workload. A short-lived network interruption may justify more retries; a locked database file should not be hidden behind an hour of repeated attempts. If a run appears frozen, inspect the log for repeated attempts before assuming Robocopy has crashed.
Use /MIR and /PURGE only after checking deletion risk
/MIR means /E plus /PURGE. It copies the tree, including empty directories, and deletes destination files and directories that are absent from the source. It can also overwrite destination directory security settings. A mirror switch does not repair a missing permission or release a sharing violation.
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- The source and destination paths are in the correct order.
- The destination is not a broader parent directory than intended.
- Every destination-only item is approved for deletion.
- Security settings on the destination may be replaced or changed.
- The command is being tested without destructive switches first when the paths are unfamiliar.
robocopy C:Source D:Destination /MIR /R:2 /W:5 /LOG:C:Temprobocopy-mirror.logUse /PURGE separately only when you specifically want destination-only items removed. If the log shows error 32 while deleting an extra destination file, find the process using that file; changing to backup mode does not make a locked deletion safe.
A repeatable troubleshooting procedure
- Capture output. Add
/LOG:<path>or/TEEand preserve the complete run. - Classify the failure. Separate error 5, error 32, error 33, and any other code. Note whether the operation was copy, delete, directory access, or security handling.
- Validate paths and identity. Confirm source, destination, account, elevation, and—if remote—the share and server context.
- Branch for error 5. Verify intended ACL access. If authorized and required privileges are present, test
/ZBor/B. Review whether security-copy switches are necessary. - Branch for error 32. Locate the open handle with an administrative Handle search. Close or quiesce the owning workload through its supported procedure.
- Bound the run. Use explicit
/Rand/Wvalues so a failed test ends promptly. - Retry narrowly. Re-run the affected file or small directory first, then expand to the full tree.
- Review destructive options. Confirm deletion and destination-security consequences before adding
/MIR,/PURGE, or broad security-copy settings.
Common scenarios and the right response
Robocopy says access denied on one destination folder
Check the destination ACL and the account running the command. If this is an authorized migration and the account has backup privilege, test /ZB with bounded retries. If the folder is governed by a policy or belongs to another owner, obtain the intended rights instead of copying around the policy.
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Robocopy says error 32 while deleting a destination-only file
The file is likely open. Identify its holder with Handle, ask the owning application or service to release it, and retry the deletion. Do not add /B expecting it to solve a sharing violation.
A live application folder copies inconsistently
Do not assume a successful Robocopy exit means an application-consistent backup. Use the application’s backup or quiesce process, especially for databases and other files that are actively updated. Then copy the quiesced files with a log and bounded retries.
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Check the identity used for the remote connection, share permissions, NTFS permissions, server policy, and security software. A local backup-mode switch cannot substitute for valid network authentication or server authorization.
The command appears to hang
Inspect the console or log for repeated retries. The default one-million retry count and 30-second wait can make an unresolved failure look frozen. Stop the run if appropriate, then repeat with explicit /R and /W values while you diagnose the path.
Only security metadata fails
If data copies but owner, ACL, or auditing operations fail, review the selected /COPY flags and the account’s rights. Do not escalate to /COPYALL automatically; remove unneeded security properties or obtain the specific authorization required for them.
What not to do
- Do not treat every “access denied” line as a sharing violation or every error 32 as an ACL problem.
- Do not run
/MIRagainst an unverified destination; it can delete destination-only data. - Do not add
/COPYALL, owner, or auditing options unless the migration requires them and the account can handle them. - Do not force-close an unknown handle as a routine step.
- Do not rely on a long retry loop to hide a locked file, wrong path, or missing permission.
- Do not copy active application data blindly when the application provides a supported backup method.
- Do not assume an elevated console has the same network identity as a scheduled task or service.
When the evidence is not enough for a universal fix
Robocopy and Windows documentation establish the meanings of the error codes and the behavior of switches such as /B, /ZB, /R, /W, /MIR, and /PURGE. They cannot identify the process holding your particular file, determine your organization’s authorization, or resolve every server-side authentication and security-software interaction. Those details must be investigated on the affected machine with the exact log path, account, process, and workload context.
Frequently Asked Questions
Does /B fix Robocopy error 32?
No. /B is backup mode for access blocked by ACLs. Error 32 is a sharing violation caused by an open-file conflict; identify and safely release the owning process instead.
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Why does Robocopy keep retrying for so long?
The documented defaults are one million retries and a 30-second wait. Set explicit values such as /R:2 /W:5 during diagnosis.
Can I use /MIR to repair permissions?
No. /MIR mirrors content and purges destination-only items; it can also overwrite destination directory security settings, but it does not repair a lock or missing authorization.
What should I do if only one subfolder returns error 5?
Check that folder’s path, ACL, and the account running Robocopy. A partial copy does not prove that every destination directory is writable; resolve the specific protected directory before rerunning the tree.
How do I find the process causing error 32?
Use Microsoft Sysinternals Handle from an administrative console to search the file or directory path. Then have the owning application or service release it through its supported procedure.
Is it safe to close a handle reported by Handle?
Not as a routine step. Handle documentation warns that forced closure can destabilize an application or Windows and may leave incomplete writes. Prefer an orderly close, pause, backup, or quiesce operation.
Why does a local path work while a UNC path fails?
Remote access also depends on the server account, share permissions, NTFS permissions, server policy, and security software. Backup mode cannot replace valid network authentication or authorization.
The Bottom Line
Read the exact Robocopy code and operation first. Use /B or /ZB only for authorized ACL-related access failures; use Handle and a safe application shutdown for error 32. Bound retries, test narrowly, and verify every path before using /MIR or /PURGE.
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