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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchLDIFDE exports directory data by default; add -i to import an LDIF file. A safe workflow is to define a narrow search base, LDAP filter, scope and attribute list for exports, then review every distinguished name, attribute and changetype before importing. Run the command from an elevated prompt, write logs to a separate folder, and validate the resulting objects in Active Directory rather than relying on a successful process exit.
What LDIFDE does
LDIFDE is a Windows command-line utility that creates, modifies and deletes directory objects and exports directory data. Without -i, its documented mode is export. With -i, it reads LDIF entries and applies them to a directory server.
The examples below are command patterns, not tested commands. Replace the server name, distinguished names, filters and paths with values from your environment.
Export a scoped set of objects
A useful export specifies four things: where to search, which objects to match, how far to search and which attributes to return. The -f switch names the output file.
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ldifde -f C:Exportsusers.ldf -s <domain-controller> -d "DC=example,DC=com" -r "(&(objectCategory=person)(objectClass=user))" -p SubTree -l "distinguishedName,cn,givenName,sn,sAMAccountName"- Create the destination directory and ensure the account running the command can write to it.
- Replace
<domain-controller>and the base DN with the intended server and naming context. - Adjust the LDAP filter so it matches only the required objects.
- Choose
Base,OneLevelorSubTreefor-p. - List only the attributes needed for the task with
-l, then inspect the resulting LDIF file.
If -l is omitted, the Microsoft reference says the search returns all attributes. That can produce a file containing values that are unsuitable for another directory, so explicit attribute selection is usually safer.
Scope choices
-p value |
Search coverage | Typical use |
|---|---|---|
| Base | Only the object identified by -d |
Read one known container or object |
| OneLevel | Immediate children of the search base | Export objects directly inside one container |
| SubTree | The base and all descendants | Export a complete organizational-unit branch |
Useful export exclusions
-o <LDAPAttributeList>omits named attributes from an export.-momits certain Active Directory-specific attributes, includingobjectGUID,objectSID,pwdLastSetandsamAccountType.-nomits binary values.-urequests Unicode output.
Microsoft documents ANSI as the default export format. Unicode entries are converted to base64, and binary values in LDIF must be base64 encoded.
Prepare and import an LDIF file
An import explicitly selects import mode and should record verbose output in a known log directory.
ldifde -i -f C:Importsobjects.ldf -s <domain-controller> -j C:ImportsLogs -v- Open an elevated Command Prompt in the documented server environment.
- Review the LDIF file as text. Confirm every DN, object class and attribute is valid for the target.
- Run the command against the intended domain controller.
- Read the files written under
-j;-vprovides additional diagnostic detail. - Query Active Directory afterward and verify the expected objects and attributes.
Understand LDIF entries and change types
A simple add entry has this shape:
DN: CN=SampleUser,DC=example,DC=com
changetype: add
CN: SampleUser
description: Example account
objectClass: User
sAMAccountName: SampleUserFor existing objects, use an appropriate modify record with the attribute operation required by the LDIF format. A delete record identifies content to remove. Microsoft documents add, modify and delete as the principal changetype values.
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An export is not automatically a safe re-import file. Before importing, check whether its DNs belong to the target naming context, whether system-specific attributes should be removed, whether referenced objects exist, and whether the target schema supports every class and attribute.
Changing a domain suffix during import
Use -c <String1> <String2> to replace occurrences of one string with another. A common case is replacing the source domain distinguished-name suffix with the target domain suffix:
ldifde -i -f C:Importsobjects.ldf -s <target-domain-controller> -c "DC=source,DC=com" "DC=target,DC=com" -j C:ImportsLogs -vReview the transformed DNs and attribute values before applying the file; string substitution does not make unrelated references or security identifiers valid in the target domain.
Switches that affect safety and results
| Switch | Purpose | Operational note |
|---|---|---|
-i |
Select import mode | Without it, the documented default is export |
-f <FileName> |
Input or output LDIF file | Use separate, clearly named export and import paths |
-s <ServerName> |
Select the domain controller | Be explicit when replication topology matters |
-d <BaseDN> |
Set an export search base | Defines the root of the search |
-r <LDAPFilter> |
Filter export results | Use a precise filter to avoid unintended objects |
-p <Scope> |
Set Base, OneLevel or SubTree scope | Controls how much of the naming context is searched |
-l <LDAPAttributeList> |
Choose returned attributes | Omitting it returns all attributes according to the reference |
-o <LDAPAttributeList> |
Omit attributes from export | Useful for removing unsuitable fields |
-c <String1> <String2> |
Replace a source string with a destination string | Often used for domain DN changes |
-j <Path> |
Set the log directory | Keep logs for review and troubleshooting |
-v |
Enable verbose output | Provides more detail during an import or export |
-k |
Continue after defined import errors | Completion does not prove that every entry succeeded |
-m |
Omit selected AD-specific attributes | Helps avoid carrying identity-specific values across directories |
-n |
Omit binary values from export | Use only when those values are not required |
Use -k only with log review
-k can continue past already-member, object-class, already-exists, constraint, duplicate attribute/value and no-such-object errors. That is useful for deliberately tolerant jobs, but it can conceal missing objects or invalid data. Inspect the log and independently verify the intended changes. Microsoft advises schema-specific ntdsSchema* changetypes for schema-upgrade work instead of broad -k handling.
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Validate before touching a live directory
- Scope: Confirm the search base, filter and scope select only the intended objects.
- DNs: Check naming-context suffixes, container paths and parent objects.
- Schema: Confirm every object class and attribute exists in the target forest and that required syntax is correct.
- Identity attributes: Remove or reassess values such as GUIDs, SIDs and other AD-specific fields when moving data between domains.
- References: Ensure referenced users, groups, containers and links are present or imported in a valid order.
- Encoding: Verify Unicode handling and base64 encoding for binary values.
- Logging: Use
-jand-v, then read the log for per-entry failures. - Replication: Query the same domain controller used for the operation, then allow for normal directory replication before checking another controller.
Encoding and schema dependencies
LDIF files can contain text and base64-encoded values. If a file lacks a Unicode identifier, -u can force Unicode import. Binary attributes must use valid base64; copying a textual representation into a binary field will fail or create unusable data.
Schema changes have dependencies. Add prerequisite attributes or classes before objects that reference them. Microsoft gives forward-link attributes before their corresponding back-link attributes as an example and notes that the schema cache must be updated before dependent classes are added. Treat schema work separately from ordinary user or group imports and verify the forest schema version and replication state first.
The unicodePwd exception
Password handling is not a normal export/import scenario. unicodePwd cannot be read by a directory search and cannot be added while creating an object; it can only be modified. Microsoft requires a 128-bit encrypted TLS/SSL or SASL connection for that modification. Documented approaches use port 636 for SSL/TLS or the -h option for SASL.
Password changes also require the appropriate rights and must satisfy the target domain’s password policy. Do not treat a standard port-389 export/import command as a password-management method, and never expect an exported password value to be reusable.
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Ports and connection choices
Microsoft documents LDAP port 389 and Global Catalog port 3268 as defaults. Select the server, port and encryption method that match the operation’s security and directory requirements. A Global Catalog query is not automatically equivalent to searching a writable domain naming context, so confirm that the target server contains the objects and attributes you need before importing.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Recovery-specific use
Microsoft’s deleted-account recovery guidance uses LDIFDE to export memberOf data for users or computers, generate group-membership LDIF files, import those files to appropriate domain controllers and replicate the changes. This restores membership information as one stage of a larger recovery procedure; it is not a substitute for a supported system-state or forest-recovery plan.
Common failure patterns
The command exports the wrong objects
Recheck -d, -r and -p. A broad SubTree scope or an incomplete filter can include containers, service accounts or objects outside the intended branch.
Objects already exist or are missing
Read the log to distinguish duplicates from missing parents or references. Correct the LDIF or import order rather than enabling -k blindly.
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An attribute is rejected
Check spelling, value syntax, object-class requirements, schema availability and whether the attribute is system-managed. Remove exported identity-specific attributes when the target directory should generate new values.
Binary or Unicode data is corrupted
Verify the file’s encoding marker, use -u only when appropriate, and confirm that binary values are base64 encoded and preserved exactly.
Password modification fails
Use an encrypted TLS/SSL or SASL connection, confirm permissions and password policy, and remember that unicodePwd is modified rather than added or read.
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