It may be that the previously downloaded file violated the Baidu Cloud Agreement and was blocked by the background, so it cannot be downloaded.

Related Agreement:

The user guarantees that the content uploaded to Baidu Cloud Services shall not and is prohibited from directly or indirectly:

Deleting, hiding, or changing Baidu Cloud Any patent, copyright, trademark or other proprietary notice displayed on or contained in the Service;

Interfere or attempt to interfere in any way with the normal operation of any part or function of the Baidu Cloud Service or Baidu website;

Avoid, attempt to circumvent, or claim to be able to circumvent any content protection mechanism or Baidu Cloud Service data measurement tool;

Use Baidu-derived content in written format or graphic form without Baidu’s prior written consent. Any registered or unregistered work, service mark, company logo (LOGO), URL or other mark;

Use any mark, including but not limited to in order to tarnish the rights of the owner of such mark, Use the Baidu Marks in a manner that weakens and damages them, or creates or claims to create any obligations or grant any rights or permissions to themselves or any other person in a manner that violates this Agreement. Users may not export unless specified in writing by Baidu. Any user information, and must stop using and delete any user information or other Baidu Cloud service content within 24 hours after obtaining it;

Display or display to any non-original user without prior consent of the original user or in a manner that Otherwise provide any user information;

Request, collect, solicit or otherwise obtain access to Baidu account, password or other authentication credentials from any user;

For Any user automatically logs in to Baidu account proxy authentication credentials;

Provides tracking functions, including but not limited to identifying other users viewing or operating on personal homepages;

Automatically redirects the browser window Direct to other web pages;

Impersonate another person or gain access to Baidu Cloud services without authorization; or allow any other person to personally identify the user without the user's express consent.

If a user violates any of the above guarantees, Baidu has the right to warn, block, or even disqualify the user based on the circumstances; if the user violates the above guarantees, Baidu Cloud Services, If Baidu Cloud service users or any of Baidu's partners cause losses, the users shall bear all legal liabilities and compensate for the losses.

User's commitment:

Enter computer information network or use computer information network resources without permission;

Unauthorized use of computer information network functions Deleting, modifying or adding;

Deleting, modifying or adding data and applications stored, processed or transmitted in computer information networks without permission;

Deliberately creating and spreading computer viruses and other destructive programs;

Other behaviors that endanger the security of computer information networks.

Opposing the basic principles established by the Constitution;

Endangering national security, leaking state secrets, subverting state power, undermining national unity;

Injuring national honor and interests;

Inciting ethnic hatred and discrimination, undermining national unity;

Undermining national religious policies, promoting cults and feudal superstitions;

Spreading Rumors, disrupting social order, undermining social stability;

Spreading obscenity, pornography, gambling, violence, murder, terror or instigating crimes;

Insulting or slandering others, infringing the law of others Rights and interests;

Contains other content prohibited by laws and administrative regulations.

Once it has obtained written authorization from the rights holder (if any) of the content uploaded, published, transmitted or disseminated through other means using the network services provided by Baidu Cloud Service, it has also made an arrangement with the aforementioned rights holder regarding the distribution of rights and interests. Reach an internal agreement to ensure that it has full, complete, flawless, and exclusive ownership and intellectual property rights before submitting and uploading relevant content to Baidu Cloud Services.

The content uploaded, published, transmitted or otherwise disseminated by users using the network services provided by Baidu Cloud Services must not contain any information that violates national laws, regulations and policies, including but not limited to the following information:

Users are not allowed to use this network service system for any illegal purpose; they are not allowed to use Baidu cloud storage network services in any form to infringe Baidu's commercial interests, including but not limited to publishing commercial advertisements not authorized by Baidu; they are not allowed to use Baidu Cloud The service network service system conducts any behavior that may adversely affect the normal operation of the Internet or mobile network;

Users are not allowed to use Baidu Cloud Services to engage in the following activities:

If the user uses The content uploaded, published, transmitted or disseminated through other means through the network services provided by Baidu Cloud Service has rights defects or infringes upon the legitimate rights and interests of a third party (including but not limited to patent rights, trademark rights, copyrights, copyright neighboring rights, portrait rights, privacy rights, reputation rights, etc.) that may cause Baidu or other units that cooperate with Baidu to face any complaints, reports, inquiries, claims, or lawsuits; or cause Baidu or other units that cooperate with Baidu to suffer any loss of reputation, reputation, or property. , users should actively take all possible measures to ensure that Baidu and other units that cooperate with Baidu are not affected by the above claims and lawsuits. At the same time, the user shall be fully liable for any direct and indirect economic losses suffered by Baidu and other units that cooperate with Baidu.