file format

When I try to open or extract my .rar archive I see. "The archive is either in unknown format or damaged." How to remove this error and to unpack my .rar file? Should I try another tools like 7-Zip? Thanks!

Severity Rating: Important Revision Note: V1.0 (May 12, 2015): Bulletin published. Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow denial of service if a remote, unauthenticated attacker convinces a user to open a share containing a...

Hi, After a power outage a particularly important file gets the error "Excel cannot open the file.xlsx beacause the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file. The file format has not...

Hi friends, We have an application need to convert a file(txt) from the application into a pdf file. We have a batch file scheduled every night that generates this txt file from the application. In the batch file, we will be passing this txt file as input and also provide output file name...

Creating a virtual drive in vmware or hyper-v As a modern system hyper-v breaks a hdd into small pieces automatically but vmware still asks the user a question… do you want me too do this? Option 1 = a single file and option 2 is break the disc up into small pieces so what's the different and...

Even if you’re not a Windows Insider, you can still tell us what you’d like to see in Windows. We (Microsoft not, this Forum) now have a Link Removed which is open to anyone who wants to send us ideas and suggestions for Windows. For example – if you think it would be awesome if Windows natively...

I am a mac user but woud like to install windows 8 or 8.1 wtever on my mac. I would like to do bootcamp for this. I found a stduent version of windows 8 and purchased that but it turns out it's an exe file and I couldnt open it on my mac. It seems that I need an iso file but whats that...

I have created a 30 minute film clip of a family vacation, and I would like to burn it to a DVD so that it can be played on any home DVD player. Using Windows Explorer, I first insert the DVD in my drive and wait a bit for the box to appear asking how I wish to use the DVD. I click the...

Large number of e-mails are difficult to maintain. E-mails files in Outlook gets corrupted if it exceeds the file size limit. So, you can convert large mails to other client and save them. But these converting requires that the e-mail file format is converted otherwise it can not be read on...

I've just upgraded to Windows 7, and successfully installed and used Office 2003. I now find that the Office 2003 software does not recognise the file format of .xlsx files. Under XP, a small utility came into action to convert the file to .xls format. Is it possible to get this working again...

very similar to compilers posts os win7 + works 4.5 opens a .wps file. eg : simple.wps edit the document and "save as" simple1.wps saved in same directory check file in explorer : files simple.wps and simple1.wps.doc now exist. attempting to open file simple1.wps.doc from within explorer...

Oh god, I don't know what I have done, everything is now a winrar file, If I try to open a file it says: ''The file is either in unknown format or damaged''. I can't even post a print because I can't open paint!

When I use the Windows 7 option to convert .wtv to .dvr-ms the converted .dvr-ms files are much shorter in length than the original .wtv files, e.g. a .wtv file with a length of 2:35:58 will be converted to a .dvr-ms file with a length of 29:35. To troubleshoot this I tested a few .wtv files...

I have an NAS (Network Attached Storage) but I recently set up. (It replaces the old NAS I left turned off for three years. The drive is unchanged from the old machine, it simply has a new machine around it.) There are a lot of zip files I have stored on it. Every one of them, if I dry to...

I have several books downloaded from the Gutenberg project. They are .epub files. I tried to open one on my computer and it asked me to open the file using a program. I picked Microsoft Office Word - which didn't work - understandably. Now all the books I have downloaded try to open with...

I have a back up of my emails from outlook 2010 in a hard drive. I shows its file format as .pst. I need to import these emails in mail.app. Using import function is a waste as it imports only the empty folders. How do I imports all the folders and the mails in them too. Please help.

i've been spending the last month saving all my videos (a few hundred) as mp4s (they're all wmvs). can i type something in the folder's search box so it'll display any that AREN'T mp4 to see what i missed when i'm done?

I got all my windows mail files transferred to my new pc with Windows 8. Since they are in Vista Windows mail format I cannot open them. There does not seem to be an app for this. Any ideas on what I can use to view the contents?

i have an avi video that i want to trim. but when i use movie maker and trim, i don't see an option to simply re-save it as an avi video. it seems i have to convert it to mp4 or wmv. anyway to keep it as an avi? thanks.

I saved my important photos in a folder.But accidently I deleted that folder permanently from recycle bin... 2 weeks later i retrieved that folder using undelete software....but now in that folder,all the pictures display with the same default icon (picture of a lake with mountain and blue sky)...