---
id: "en/faq-technical"
title: "FAQ: Deployment, AI, limitations and troubleshooting"
language: "en"
description: "Covers FAQs related to deployment, AI, limitations, and troubleshooting."
canonical_url: "https://www.babel.cc/public/babelwiki/en/faq-technical.html"
markdown_url: "https://www.babel.cc/public/babelwiki/ai/en/faq-technical.md"
alternates: {"en": "https://www.babel.cc/public/babelwiki/ai/en/faq-technical.md", "zh": "https://www.babel.cc/public/babelwiki/ai/zh/faq-technical.md"}
reading_note: "文档记录不等于当前部署能力；以实际版本、授权模块与配置为准。保留原文的可选、限制及待确认说明，勿补猜接口。 / Documentation is not a guarantee for every deployment. Preserve optional-module requirements, limitations and unresolved API contracts."
---

# FAQ: Deployment, AI, Limitations and Troubleshooting

The following questions cover common operations, permissions, collaboration and troubleshooting scenarios when users use BabelBird Enterprise Drive.

## 115. How to renew the professional version when it expires?
Click "Settings" in the inverted triangle next to the user's avatar in the upper right corner, and click the renewal button at the bottom of the account information. The default renewal period is one year, but you can also set the length of time yourself, such as 2 years, 3 years, etc.

## 116. Are there any restrictions on file types uploaded to BabelBird?
BabelBird stores many file formats, but uploads remain subject to permissions, enterprise allow/block lists, security checks, file-size limits and quotas. Sync also applies excluded-type and temporary-file rules. Upload support does not imply native preview support; preview requires the relevant conversion module.

## 117. Is there a limit to the number of people who can edit online?
Collaborative online editing is supported. Concurrent capacity depends on editor licensing, deployment, server resources and document complexity; it is not unlimited. Evaluate larger sessions against the enterprise configuration.

## 118. When sharing files with others, the deadline has not yet reached, but the link cannot be opened.
The most likely reason is that the sharing link has been closed and reopened. In this case, the first shared link that was spread has become invalid.

## 119. The download speed suddenly slowed down. What happened?
The following situations may occur:

It may be a network problem, the network is stuck or the network speed suddenly slows down;

Use VPN or other circumvention tools to occupy network resources;

Or the high-speed traffic allocated by BabelBird has been used up and the speed limit mode has started to be used;

Or the administrator has set a download speed limit for a certain user.

## 120. Entering a folder, the lower right corner prompts that the file does not exist.
There are many reasons for this situation. For example, the server hard disk is full. For example, the memory is full at some point and the system is abnormal. Network problems may also cause the above problems (such as turning on VPN or circumvention tools). You can wait a moment and try again, or contact BabelBird customer service.

## 121. How to check the real-time online editors of shared files?
Only Office files can be edited online by multiple people at the same time. When online editing is turned on, the upper right corner will display how many people are currently online in real time. Click View Users to display the users currently editing the file.

## 122. Department roles have the permission to upload files, but files cannot be uploaded to a certain folder in the department. Why?
This folder has file access control, and certain users or certain roles or everyone in the department cannot upload files.

## 123. After a file in a team is deleted, whose recycle bin is it in?
Files deleted in the group are in the recycle bin of the deleter and the group creator. If the team creator deletes the file, the file is only in the team creator's recycle bin. If a user belonging to a certain enterprise deletes a file in a team, the file will only be in the team creator's recycle bin.

## 124. After the team is deleted, will it be saved in the recycle bin?
After the team is deleted, it is deleted directly and will not be saved to the Recycle Bin.

## 125. Does Babel support privatized deployment?
BabelBird can not only be used in SAAS mode on public clouds, but also supports private deployment.

The private version of BabelBird has all the functions of the public cloud version, as well as unique private cloud functions such as customized login background, customized third-party platform docking, and customized usage modules.

## 126. How to privatize the Babel system?
In order to ensure service quality and operational stability of the privatized system, Babel provides users with a full range of privatized deployment services. All privatized systems are deployed by BabelBird engineers, and users only need to prepare servers and related hardware equipment suitable for BabelBird's privatized deployment as required. We will also provide privatized deployment hardware solutions based on user needs. Users can purchase their own hardware or use existing servers to deploy BabelBird. At the same time, BabelBird also supports deployment on cloud services such as Huawei Cloud, Alibaba Cloud, and Tencent Cloud.

If you need to deploy a privatized Babel system, please contact our customer service staff. Tel: 400-9204020

## 127. Does Babel support object storage?
Taking into account performance and efficiency, scalability, security and cost-effectiveness, Babel recommends privatized users to use object storage for deployment. At the same time, the Babel team also supports building object storage systems for customers on servers with complex requirements. This will save a lot of budget than purchasing a complete set of object storage devices, and is more cost-effective.

## 128. What hardware is needed to privatize the Babel system?
Depending on the number of files managed and the number of concurrent users used, BabelBird also has different hardware requirements, which need to be estimated based on specific needs. We provide free hardware needs assessment and hardware construction solution services. You can contact our customer service staff for details. Tel: 400-9204020

## 129. Does BabelBird support integration with corporate WeChat?
The privatized version of BabelBird supports docking with third-party systems such as Enterprise WeChat, DingTalk, Feishu, OA, ERP, PDM... to realize single sign-on, import of users and organizations, use of BabelBird on third-party workbench, notification delivery, mobile H5 access... and other functions. Among them, Enterprise WeChat, DingTalk, and Feishu are standard docking modules, and private cloud users can configure them themselves in the enterprise console.

## 130. What is Zhichao AI?
Zhichao AI combines enterprise knowledge Q&A, search, image search, OCR, document assistance, spreadsheet analysis and custom agents. Uploaded BabelBird files that AI can read are automatically ingested and vectorized for AI assistance, AI search and image search. Ingestion does not make files public or fine-tune the model; verify answers against the original. See [Zhichao AI](https://www.babel.cc/public/babelwiki/en/ai-overview.html).

## 131. I also want Zhichao AI assistant, how to operate it?
With Zhichao AI enabled, open My AI Tools (Agents) and choose Create Agent. Select its knowledge scope in the BabelBird file directory or upload new files; the selected scope is the bot's knowledge base. Configure instructions and purpose, then test answers. Choose the publication scope when publishing; people within it can view the agent, and anonymous access is supported. A normal knowledge-base bot does not require model fine-tuning. See [creation and publication steps](https://www.babel.cc/public/babelwiki/en/ai-assistant-agent.html).

## 132. Does Zhichao AI charge? How to charge?
Fees depend on the edition, license, model usage, private compute and customization. Standard modules, external model API usage and specialized services may be billed differently. Creating a knowledge base does not inherently require a separately paid training project; consult the contracted scope.

## 133. Can Zhichao AI be privatized?
Private deployment is supported. Local OCR, indexes and vector services can be combined with local inference or enterprise-approved external model APIs. Dedicated GPU requirements depend on local models and workload. Review what data is sent outside the enterprise when using an external API.

## 134. What file formats does BabelBird support for preview?
BabelBird supports the preview of most commonly used documents, as well as the storage and client editing of all types of files. The "supported file formats" here specifically refer to the file formats that can be opened for preview on Babbitt without the use of third-party plug-ins.

BabelBird supports uploading, downloading and opening with clients in all formats. The formats listed below are formats that can be previewed directly on BabelBird without the use of third-party applications.

Text file: txt, md

Office files: doc, docx, ppt, pptx, xls, xlsx, wps, wpt, dps, rtf, dpt, et, ett

Code class: js, xml, htm, html, css, scss, jsp, c, cpp, java, php, m, h, hpp, mm

Other commonly used format files: Pdf, mail, msg, epub

Optional support: (need to add server)

key, numbers, pages

Audio and video categories: mp3, mp4, wav, asf, ape

Optional support: (optional options require additional server and corresponding module fees, please contact our customer service staff)

flv, f4v, mp4, m4v, webm, 3gp, 3gpp, wmv, avi, rm, rmvb, mkv, asf, mov, mpeg, swf, mpg, mts, m2ts, ogv

3D graphics classes: Dae, fbx, obj, stl

Optional support: (optional options require additional server and corresponding module fees, please contact our customer service staff)

x3d, ply, 3ds, abc, m3d

(Optional support for revit, solidworks, 3DMax)

Image format categories: bmp, jpg, jpeg, gif, png, bmp, psd, tif, tiff, raw, cr2, arw, dng, nef, pef, dcm, ico

Vector picture categories: ai, svg, eps, indd, indt, idml

CAD classes: dwg, dwt, dxf

Compressed file class:

Optional support: (optional options require additional server and corresponding module fees, please contact our customer service staff)

rar,zip

## 135. How to use the client to download anonymously?
When an anonymous user downloads a large file from a shared link and is prompted to use a client to download, how can I use the client to download?

Download the latest version of the client. There is a Use Client to Access Sharing Links button at the bottom of the client login interface.

Click this button and paste the share link address to download the file using the client.

## 136. I uploaded a file on BabelBird, but after a while the file was automatically deleted. What happened?
Check the file log for the actor, client, time and operation source. Review cleanup tasks, the PDF conversion option to delete originals, other users and deletions propagated by two-way sync. Do not assume a specific old-client bug. If retained in the recycle bin, restore with the required permission after stopping the relevant cleanup rule or sync task, and retain logs for support.

## 137. Can BabelBird upload files on the mobile browser?
Mobile browser uploads depend on the current web/H5 entry, browser capabilities and sharing permissions. Check for an upload control and authorization for the current user or anonymous visitor. Use the mobile client when that entry cannot upload; an older browser restriction does not apply to every mobile workflow.

## 138. Can anonymous users upload files?
Babel supports anonymous users to upload files. As long as link sharing is set to allow anonymous users to upload, anonymous users who get the link can upload files.

## 139. Why can’t I upload files in the personal file section?
The administrator has turned off the "Allow users to upload personal private files by default" switch button on the enterprise console. Users in the entire enterprise cannot upload files in the personal file column.

## 140. Can departments be created in the front desk?
Super administrators and security officers can create departments under any department in the front desk. Operation and maintenance managers can create departments under their own departments. The default department manager role can create departments under their own department, and department personnel with "sub-department management" permissions in other roles can also create departments under their own departments.

## 141. Are there any quantity or size limits for batch upload files?
Batch upload is supported, subject to file-size limits, available space, enterprise policies and browser/server capacity. It is not unlimited. For very large collections, upload in batches through the client and verify failed items, transfer queues and cloud results.

## 142. When registering and logging in, I cannot receive the verification code (email, mobile phone)?
If you are required to use a mobile phone number when registering, you will need a SMS verification code to complete the registration. When you cannot receive the verification code, obtain the verification code again, or check the interception information of the information module. If there is still no verification code, there may be a problem with Alibaba Cloud's SMS module. You can wait for a while and try again, or contact our customer personnel and we will handle it in time.

When logging in, you can use your account password or SMS verification code. If the verification code cannot be received, please refer to the handling method of not receiving the verification code during registration.

The situation where an email verification code is required is when a share or project invites an unregistered BabelBird's email. This email will receive an invitation link. Open the link and ask for identity verification. A verification code will be sent to the user's email. In this case, you can basically receive the verification code. If you do not receive it, you can resend it or check the trash can.

## 143. What is the difference between private and public?
Public cloud uses a BabelBird-operated service; private deployment runs on enterprise-owned or designated cloud resources. Domains, identities, integrations, storage, models and security policies can be configured within the contract. Watermarks, permissions and file management are not all private-only features. Scope and capacity depend on the edition and implementation.

## Which private cloud licensing models and user capacities are available? {#private-cloud-license-options}

The 2026 options include perpetual licensing and annual subscription. Both list packages for 300, 500, 1,000, 2,000, 3,000, 5,000 and 10,000 users; perpetual licensing also includes a per-user option. Additional users, storage expansion in 50 TB increments, multi-tenant/resale rights and platform-specific white-label licenses need separate confirmation. A storage expansion license does not supply storage hardware; check the base allowance in the license checklist. See the [plan overview](https://www.babel.cc/public/babelwiki/en/private-package-overview.html#license-options) and [license extensions](https://www.babel.cc/public/babelwiki/en/private-package-standard.html#license-extensions).

## Is the licensed user count the same as online Office concurrency? {#private-cloud-office-concurrency}

They are different measures. The private cloud license sets user capacity; online Office and co-editing are a separate optional module with concurrency tiers of 20, 50, 100 and 200. BabelViewer preview and ONLYOFFICE editing are also separate components. Every plan includes base file preview without separate selection; CAD/3D extensions, video transcoding, OCR, base API and Zhichao AI are selected as needed. See the [Standard Package](https://www.babel.cc/public/babelwiki/en/private-package-standard.html) and [Optional Modules](https://www.babel.cc/public/babelwiki/en/private-package-modules.html).

## Does a perpetual license include perpetual maintenance and updates? {#private-cloud-maintenance-term}

Software license duration and maintenance duration are separate. Annual standard maintenance lists one year of technical support and updates. On-site deployment, training, third-party security testing and managed maintenance are additional service options. An annual subscription term does not itself establish the maintenance term; confirm scope, dates and expiry arrangements in the contract. See [Service and Maintenance](https://www.babel.cc/public/babelwiki/en/private-package-service.html#support-options).

## 144. Who has what permissions to archive files?
For personal private files, folders, projects, etc., the creator of the file can archive them in the archive; for files/folders/projects within the department, generally users with department manager permissions can archive them. To be more precise, users with "department file management" permissions can archive files within the department.

## 145. Where is the electronic signature set? Can it be written by hand?
The electronic signature is added in Personal Settings-Signature Settings. Click the inverted triangle button on the user's avatar in the upper right corner to open the settings pop-up box. You can add your own electronic signature in the signature settings. Electronic signatures are drawn with the mouse. If you want to write by hand, you can use auxiliary hardware such as a writing pad to write your electronic signature by hand. Electronic signatures are used during the approval process. After the document is approved and finalized, the approver can insert his or her own electronic signature. On the file preview page, right-click the mouse to insert the signature. The inserted electronic signature can be resized, changed position, and oriented.

## 146. How can I chat?
BabelBird chat can be held in the discussion group. Teams, projects, and departments have their own discussion groups. Team members, project personnel, and people in departments can see the discussion groups of their teams, projects, and departments in the discussion group channel. The discussion group also supports sending files. For apps, you can also send voice messages in discussion groups.

## 147. Can file watermarks be added in batches?
Administrators can apply a common watermark policy without editing each file. The new display scope offers Preview only or All pages; the latter covers application pages, not just previews. Types include account information, text, image and graphic/vector encoding for assisted screenshot tracing. Display scope differs from file applicability and does not automatically watermark every downloaded original. See [Watermarks](https://www.babel.cc/public/babelwiki/en/watermark-security.html).

## 148. The upload speed is very slow, what’s going on?
There are several possibilities when the upload speed is slow:

Internet speed is relatively slow;

At the same time, many people are uploading files in large batches, which causes the server to occupy a large amount of memory and the CPU to be busy;

The circumvention tool or VPN used seizes network resources.

## 149. Why can’t I invite members?
Teams can invite members, and team invitation members can only enter their mobile phone numbers or add them from frequently used contacts. Project invitation members can enter their nickname, email address or mobile phone number, and it will be confirmed when the user is matched. Note: You need to click the OK button again in the project information box before the invitation is successful. When adding members to a project, you can also choose from common contacts, company members, external personnel, and groups. It supports adding a department or a group to the project.

## 150. Why is the mapped drive not syncing?

This covers mapped drives that do not update and conflicts in local sync folders. These use different directory and cache mechanisms; identify which one you are using first.

1. Stop editing or overwriting affected files, and pause related normal sync tasks. Save separate copies of readable local originals, changes that have not uploaded and downloadable cloud candidate versions outside both sync folders and mapped drives. A mapped-drive placeholder does not mean the content has downloaded; if it cannot be read, do not clear caches and contact an administrator.
2. Record the error, path, task status, client version and last successful upload time. Check network access, account, upload/download permissions, quota, free cache-disk space and path errors first.
3. Before releasing space, save edits, wait for successful upload and close editing applications. Windows mapped drives use CFAPI, with a cache location customizable during first installation; Mac uses native File Provider to manage local content. Right-click the relevant file or folder in the mapped drive in File Explorer or Finder and select the command to release local content, using the same workflow as OneDrive. Preserve independent copies and stop cleanup if uploads or errors remain. Do not directly delete cache directories. After release, verify that the cloud file remains and reopen it online to confirm it can download; see [Mapped-drive cache guidance](https://www.babel.cc/public/babelwiki/en/mapped-drive.html). Save unuploaded edits before signing out or restarting as well.
4. For persistent conflicts, compare local and cloud versions and decide which content to keep. Do not troubleshoot by downloading over the local file; download into a separate directory for comparison first. If uploading a local copy, verify the destination and the Upload as a new version choice, then check the cloud version and content after upload.
5. If the sync task still reports errors, find it under Settings → Sync folders in the client, click the wrench-shaped action button on its row and select Reset this synchronization (重置该同步 in the Chinese interface). The client rescans and realigns the local and cloud sync folders to repair sync errors. Save edits, check the sync direction and preserve important changes that have not uploaded before proceeding. Check the task status and both copies afterward. If errors persist, provide the recorded details to an administrator or support staff.

After recovery or resuming synchronization, check content on both sides and task status. Badges or modification times alone do not establish that all changes have been saved. See [Synchronization, client and mapped-drive FAQ](https://www.babel.cc/public/babelwiki/en/faq-sync.html) and [Recovery and handover FAQ](https://www.babel.cc/public/babelwiki/en/faq-preview-search.html).

## Does automatic organization extract uploaded archives? {#automatic-extraction}

No. The standard edition offers organization by month, year or filename keywords and does not include extraction. Automatic extraction is a separate option for private deployments and can be customized to customer requirements. Once enabled, it can extract specified archives after upload. Formats, password-protected archive handling, destination folders, name conflicts and original-archive retention are configured as agreed for the project. Ask the administrator or implementation team to configure the delivered service, then upload a small archive to check the result. See [Automatic extraction configuration](https://www.babel.cc/public/babelwiki/en/automation-overview.html).