How To Fix HTTP Error 304 (Not Modified)
![]() | Error Number: | HTTP Error 304 |
Error Name: | Not Modified | |
Error Description: | When the request header includes an 'if modified since' parameter, this error code will be returned if the file has not changed since that date. Search engine spiders (robots) can generate a lot of these errors. | |
Developer: | Microsoft Corporation | |
Software: | Windows Operating System | |
Applies to: | Windows XP, Vista, 7, 8, 10, 11 |
null problems with Not Modified most often stem from a corrupt or missing file. The primary way to resolve these problems manually is to replace the null file with a fresh copy. After the problem file is replaced, running a registry scan can help clean up any invalid Not Modified, file extension, or other file path references which could have been affected from a previous malware infection.
Classic Not Modified Problems
Complications with and Not Modified comprise of:
- "Not Modified error."
- "Not Modified is missing."
- "Not Modified is missing."
- "The module for Not Modified failed to load."
- "Registration failure: Not Modified."
- "Error during runtime: Not Modified."
- "Error loading Not Modified."
Commonly, Not Modified errors are seen during the -related hardware or software install process, while a Microsoft Corporation-related driver is loaded, or during Windows shutdown or startup. Documenting Not Modified problem occasions in is key to determine cause of the Edge problems, and reporting them to Microsoft Corporation.
Source of Not Modified Errors
Not Modified issues are caused by a corrupt or missing Not Modified, invalid registry keys associated with , or a malware infection.
More specifically, these Not Modified errors can be caused by:
- Invalid Not Modified (or corrupted) registry key.
- Virus or malware infection that has corrupted the Not Modified file or related program files.
- Not Modified maliciously, or mistakenly, removed by another software (apart from ).
- Not Modified is in conflict with another program (shared file).
- Corrupt download or incomplete installation of software.
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Article ID:
120616
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Last Updated:
6/13/2023
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