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How To Fix Excel Error File Extension Not Valid



If you have Excel Error File Extension Not Valid then we strongly recommend that you download and run this (Excel Error File Extension Not Valid) repair tool.

Symptoms & Summary

  • Excel Error File Extension Not Valid will appear and crash the current program window.
  • Your computer crashes frequently showing Excel Error File Extension Not Valid whilst running the same program.
  • Your Windows runs slowly and mouse or keyboard input is sluggish.
  • Your computer will occasionally 'freeze' for a period of time.

Excel Error File Extension Not Valid and other critical errors can occur when your Windows operating system becomes corrupted. Opening programs will be slower and response times will lag. When you have multiple applications running, you may experience crashes and freezes. There can be numerous causes of this error including excessive startup entries, registry errors, hardware/RAM decline, fragmented files, unnecessary or redundant program installations and so on.

Resolution

In order to fix your error, it is recommended that you download the 'Excel Error File Extension Not Valid Repair Tool'. This is an advanced optimization tool that can repair all the problems that are slowing your computer down. You will also dramatically improve the speed of your machine when you address all the problems just mentioned.


Recommended: In order to repair your system and Excel Error File Extension Not Valid, download and run Reimage. This repair tool will locate, identify, and fix thousands of Windows errors. Your computer should also run faster and smoother after using this software.


File Size 746 KB

Compatible Windows XP, Vista, 7 (32/64 bit), 8 (32/64 bit), 8.1 (32/64 bit) Windows 10 (32/64 bit)

Downloads 361,927

There are many reasons why Excel Error File Extension Not Valid happen, including having malware, spyware, or programs not installing properly. You can have all kinds of system conflicts, registry errors, and Active X errors. Reimage specializes in Windows repair. It scans and diagnoses, then repairs, your damaged PC with technology that not only fixes your Windows Operating System, but also reverses the damage already done with a full database of replacement files.


A FREE Scan (approx. 5 minutes) into your PC's Windows Operating System detects problems divided into 3 categories - Hardware, Security and Stability. At the end of the scan, you can review your PC's Hardware, Security and Stability in comparison with a worldwide average. You can review a summary of the problems detected during your scan. Will Reimage fix my Excel Error File Extension Not Valid problem? There's no way to tell without running the program. The state of people's computers varies wildly, depending on the different specs and software they're running, so even if reimage could fix Excel Error File Extension Not Valid on one machine doesn't necessarily mean it will fix it on all machines. Thankfully it only takes minutes to run a scan and see what issues Reimage can detect and fix.

 

Windows Errors

A Windows error is an error that happens when an unexpected condition occurs or when a desired operation has failed. When you have an error in Windows, it may be critical and cause your programs to freeze and crash or it may be seemingly harmless yet annoying.


Blue Screen of Death

stop error screen or bug check screen, commonly called a blue screen of death (also known as a BSoD, bluescreen), is caused by a fatal system error and is the error screen displayed by the Microsoft Windows family of operating systems upon encountering a critical error, of a non-recoverable nature, that causes the system to "crash".


Damaged DLLs

One of the biggest causes of DLL's becoming corrupt/damaged is the practice of constantly installing and uninstalling programs. This often means that DLL's will get overwritten by newer versions when a new program is installed, for example. This causes problems for those applications and programs that still need the old version to operate. Thus, the program begins to malfunction and crash.


Freezing Computer

Computer hanging or freezing occurs when either a program or the whole system ceases to respond to inputs. In the most commonly encountered scenario, a program freezes and all windows belonging to the frozen program become static. Almost always, the only way to recover from a system freeze is to reboot the machine, usually by power cycling with an on/off or reset button.


Virus Damage

Once your computer has been infected with a virus, it's no longer the same. After removing it with your anti-virus software, you're often left with lingering side-effects. Technically, your computer might no longer be infected, but that doesn't mean it's error-free. Even simply removing a virus can actually harm your system.


Operating System Recovery

Reimage repairs and replaces all critical Windows system files needed to run and restart correctly, without harming your user data. Reimage also restores compromised system settings and registry values to their default Microsoft settings. You may always return your system to its pre-repair condition.


Reimage patented technology, is the only PC Repair program of its kind that actually reverses the damage done to your operating system. The online database is comprised of over 25,000,000 updated essential components that will replace any damaged or missing file on a Windows operating system with a healthy version of the file so that your PC's performance, stability & security will be restored and even improve. The repair will deactivate then quarantine all Malware found then remove virus damage. All System Files, DLLs, and Registry Keys that have been corrupted or damaged will be replaced with new healthy files from our continuously updated online database.

 

 

Excel Error File Extension Not Valid

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(עברית)المملكة العربية السعودية (العربية)ไทย (ไทย)대한민국 (한국어)中华人民共和国 (中文)台灣 (中文)日本 (日本語)  Home20132010Other VersionsLibraryForumsGallery Ask a question Quick access Forums home Browse forums users FAQ Search related threads Remove From My Forums Answered by: Excel 2013 : open and repair excel 2013 Excel cannot open the file because the file format or

Excel File Format Is Not Valid Xls

file extension is not valid. Verify that the file has not been corrupted and that

Excel Error 101590

the file extension matches the format of the file. Microsoft Office > Excel IT Pro Discussions Question 0 Sign in to vote Some PCs have started http://answers.microsoft.com/en-us/msoffice/forum/msoffice_excel-mso_other/excel-error-cannot-open-file-because-the-file/99b57a66-395f-4775-8323-38e6924ceb89 facing this issue when we try to open an Excel file from the network. I am using Excel 2013 on Windows 7 Professional and the browser is Internet Explorer 11. The excel app opens but we get the message "Excel cannot open the file "abc.xlsx" because the file format or file extension https://social.technet.microsoft.com/Forums/office/en-US/f2034b31-070a-4ecb-ae5a-879299177cc6/excel-2013-excel-cannot-open-the-file-because-the-file-format-or-file-extension-is-not-valid?forum=excel is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file." I have verified that the Excel file is not corrupt and it opens correctly if I receive the same file via Email. Same file can also be accessed on other systems. Also all the local files are opening correctly on my system. I have also have trusted publisher certificate in my system for this source. If I try to directly access the file from the website, the Excel window open and I get the given error message. This happens only with IE and not with other browsers Edited by sidGupta23 Wednesday, July 20, 2016 12:51 PM Tuesday, July 19, 2016 12:40 PM Reply | Quote Answers 0 Sign in to vote Hi sidGupta, Please read the relpy of Freya [MSFT]: https://social.technet.microsoft.com/Forums/office/en-US/4a15e472-a265-4058-b439-7d79c2670817/xls-file-will-not-open-in-excel-2016-only-gray-view?forum=excel "The Excel team has made a change in the behavio

July 17, 2013 A common error message that an Excel user generally encounters when he tries to open a spreadsheet received in an email is:"Excel cannot http://www.stellarinfo.com/support/kb/index.php/article/resolve-error-excel-cannot-open-the-file-filename-xlsx open the file 'filename.xlsx' because the file format for the file extension is not https://community.spiceworks.com/topic/128153-how-to-fix-xls-file-format-is-not-valid valid. Verify that the file has not been corrupted and that the file extension matches the format of the file."However, this error message is not limited to the Excel files that a user gets via emails. Instead, it is often encountered with commonly used files also. You may find that an Excel workbook, on which they not valid were working for a long time, suddenly starts throwing this error message when you try to open it.To find out the unique number associated with this error message, press 'CTRL+SHIFT+I' together. After that, you will get number besides the error message: "101590"Causes: This error message is encountered when:The file is not compatible with the version of Excel that is used.The file has got corrupt.Resolutions:You can try the below mentioned resolutions to is not valid rectify this error message and regain access to your Excel sheet.Change the File Extension of Your Excel Sheet: Sometimes, the problem is seen due to the unsupported file extension of your Excel file. To check the support of xlsx extension, go to 'My Computer'. Browse 'Tools >> Folder Options >> File Types'. Check if 'xlsx' extension is included there or not. If not, then rename this file and change '.xlsx' to '.xls'.Use 'Open and Repair' Option of MS Excel: For this, open Excel, and then go to 'File >> Open'. Select the file that you want to open, but do not double-click it. Go to the 'Open' drop-down provided in the 'Open' dialog box, and then select 'Open and Repair' option from there. This process repairs the corrupt Excel sheet and opens it normally.Excel Repair Software: If none of the above mentioned resolutions is able to do any needful to you, then use of Excel repair software is recommended. Stellar Phoenix Excel Repair is one such software. It repairs corrupt excel sheet and restores entire data stored in it without altering its original formatting.You can try any of the above mentioned resolutions to rectify this error message: however, Excel repair software is best-suited one for the case wherein oth

few minutes. Join Now  A guy that I know is having trouble opening an excel document. He has been opening it fine up till today. When he click on his Excel document this message pops up ".xls file format is not valid" he can open all his other excel docs fine, it is just this certain one. He has tried to open it from other pcs but it still says the same thing. He has office 2007 on windows xp. Does anyone know of a fix for this? Reply Subscribe RELATED TOPICS: XLS File format and extension of 'filename.xls' don't match. Corrupt or unsafe? Recovering a lost XLS file User wants last four people to change a xls file   14 Replies Poblano OP Mark Whynot Feb 11, 2011 at 9:23 UTC By some chance was the file opened with a different application (maybe Word) and saved as a Word doc with an xls extension.  0 Poblano OP Valarie1317 Feb 11, 2011 at 9:27 UTC  No it doesn't appear so. When I look at it, it shows that it opens in Excel. 0 Poblano OP Mark Whynot Feb 11, 2011 at 9:31 UTC yes...the file association would be directed to excel due to the xls file extension.  Right Click the file and OPEN WITH or simply start Word and do FILE>OPEN.  We had this problem because a user opened a excel file in Word.  If the file opens you know what happened. 0 Poblano OP Valarie1317 Feb 11, 2011 at 9:41 UTC  When I open in word the document comes up in text encoding that is not readable. 0 Tabasco OP Janpie Feb 11, 2011 at 10:17 UTC Are there macros in the .xls? If so, you could try deleting the underlying Word template for that, which could have become corrupt.  If it was me, I would just workaround: restore to an earlier version of the document when I was sure it worked OK so the user could work on it. and then try to figure out what happened and look for a fix. 0 Poblano OP Valarie1317 Feb 11, 2011 at 10:23 UTC  Thanks how do yo

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Repair Instructions

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To Fix (Excel Error File Extension Not Valid) you need to follow the steps below:

Step 1:
Download Excel Error File Extension Not Valid Repair Tool

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Windows Operating Systems:

Compatible with Windows XP, Vista, Windows 7 (32 and 64 bit), Windows 8 & 8.1 (32 and 64 bit), Windows 10 (32/64 bit).